From 27973ce8b7321ff6298e7a56e074e5048306f8ad Mon Sep 17 00:00:00 2001 From: Mihail Stoykov Date: Fri, 12 Jan 2024 13:55:58 +0200 Subject: [PATCH] js: Use the new ESM support in goja through k6 This is still very hackish and tries to preserve every observable behavior possible. This also specifically skips adding support for: 1. dynamic import 2. top level await 3. anything around the internal go modules Which will be added later. Also let us concentrate on making this change as not breaking as possible. --- cmd/tests/cmd_run_test.go | 22 +-- cmd/tests/eventloop_test.go | 2 +- js/bundle.go | 80 ++++---- js/bundle_test.go | 4 +- js/compiler/compiler.go | 309 ++++-------------------------- js/compiler/compiler_test.go | 137 ++++--------- js/compiler/lib/babel.min.js | 25 --- js/initcontext_test.go | 13 +- js/module_loading_test.go | 11 +- js/modules/cjsmodule.go | 116 +++++++---- js/modules/gomodule.go | 124 ++++++------ js/modules/gomodule_basic.go | 67 +++++++ js/modules/k6/metrics/metrics.go | 2 +- js/modules/require_impl.go | 152 ++++++++++++++- js/modules/resolution.go | 139 +++++++++----- js/modulestest/runtime.go | 5 +- js/runner_test.go | 5 +- js/tc39/breaking_test_errors.json | 232 +++++++++++----------- js/tc39/tc39_test.go | 16 +- 19 files changed, 715 insertions(+), 746 deletions(-) delete mode 100644 js/compiler/lib/babel.min.js create mode 100644 js/modules/gomodule_basic.go diff --git a/cmd/tests/cmd_run_test.go b/cmd/tests/cmd_run_test.go index fadd6cdb0db..d46de4085f4 100644 --- a/cmd/tests/cmd_run_test.go +++ b/cmd/tests/cmd_run_test.go @@ -944,8 +944,8 @@ func TestAbortedByScriptSetupErrorWithDependency(t *testing.T) { if runtime.GOOS == "windows" { rootPath += "c:/" } - assert.Contains(t, stdout, `level=error msg="Error: baz\n\tat baz (`+rootPath+`test/bar.js:6:9(3))\n\tat `+ - rootPath+`test/bar.js:3:3(3)\n\tat setup (`+rootPath+`test/test.js:5:3(9))\n" hint="script exception"`) + assert.Contains(t, stdout, `level=error msg="Error: baz\n\tat baz (`+rootPath+`test/bar.js:6:10(3))\n\tat default (`+ + rootPath+`test/bar.js:3:7(3))\n\tat setup (`+rootPath+`test/test.js:5:7(8))\n" hint="script exception"`) assert.Contains(t, stdout, `level=debug msg="Sending test finished" output=cloud ref=123 run_status=7 tainted=false`) assert.Contains(t, stdout, "bogus summary") } @@ -2106,10 +2106,10 @@ func TestEventSystemError(t *testing.T) { "got event Init with data ''", "got event TestStart with data ''", "got event IterStart with data '{Iteration:0 VUID:1 ScenarioName:default Error:}'", - "got event IterEnd with data '{Iteration:0 VUID:1 ScenarioName:default Error:test aborted: oops! at file:///-:11:16(6)}'", + "got event IterEnd with data '{Iteration:0 VUID:1 ScenarioName:default Error:test aborted: oops! at default (file:///-:11:16(5))}'", "got event TestEnd with data ''", - "got event Exit with data '&{Error:test aborted: oops! at file:///-:11:16(6)}'", - "test aborted: oops! at file:///-:11:16(6)", + "got event Exit with data '&{Error:test aborted: oops! at default (file:///-:11:16(5))}'", + "test aborted: oops! at default (file:///-:11:16(5))", }, expExitCode: exitcodes.ScriptAborted, }, @@ -2118,8 +2118,8 @@ func TestEventSystemError(t *testing.T) { script: "undefinedVar", expLog: []string{ "got event Exit with data '&{Error:could not initialize '-': could not load JS test " + - "'file:///-': ReferenceError: undefinedVar is not defined\n\tat file:///-:2:0(12)\n}'", - "ReferenceError: undefinedVar is not defined\n\tat file:///-:2:0(12)\n", + "'file:///-': ReferenceError: undefinedVar is not defined\n\tat file:///-:2:1(8)\n}'", + "ReferenceError: undefinedVar is not defined\n\tat file:///-:2:1(8)\n", }, expExitCode: exitcodes.ScriptException, }, @@ -2138,11 +2138,11 @@ func TestEventSystemError(t *testing.T) { "got event Init with data ''", "got event TestStart with data ''", "got event IterStart with data '{Iteration:0 VUID:1 ScenarioName:default Error:}'", - "got event IterEnd with data '{Iteration:0 VUID:1 ScenarioName:default Error:Error: oops!\n\tat file:///-:9:11(3)\n}'", - "Error: oops!\n\tat file:///-:9:11(3)\n", + "got event IterEnd with data '{Iteration:0 VUID:1 ScenarioName:default Error:Error: oops!\n\tat default (file:///-:9:12(3))\n}'", + "Error: oops!\n\tat default (file:///-:9:12(3))\n", "got event IterStart with data '{Iteration:1 VUID:1 ScenarioName:default Error:}'", - "got event IterEnd with data '{Iteration:1 VUID:1 ScenarioName:default Error:Error: oops!\n\tat file:///-:9:11(3)\n}'", - "Error: oops!\n\tat file:///-:9:11(3)\n", + "got event IterEnd with data '{Iteration:1 VUID:1 ScenarioName:default Error:Error: oops!\n\tat default (file:///-:9:12(3))\n}'", + "Error: oops!\n\tat default (file:///-:9:12(3))\n", "got event TestEnd with data ''", "got event Exit with data '&{Error:}'", }, diff --git a/cmd/tests/eventloop_test.go b/cmd/tests/eventloop_test.go index 03acebb3e74..1bf7579dea3 100644 --- a/cmd/tests/eventloop_test.go +++ b/cmd/tests/eventloop_test.go @@ -113,7 +113,7 @@ func TestEventLoopDoesntCrossIterations(t *testing.T) { eventLoopTest(t, script, func(logLines []string) { require.Equal(t, []string{ "setTimeout 1 was stopped because the VU iteration was interrupted", - "just error\n\tat file:///-:13:4(15)\n", "1", + "just error\n\tat default (file:///-:13:5(14))\n", "1", }, logLines) }) } diff --git a/js/bundle.go b/js/bundle.go index 6525c50b9f0..db91667ad4a 100644 --- a/js/bundle.go +++ b/js/bundle.go @@ -48,8 +48,9 @@ type BundleInstance struct { // TODO: maybe just have a reference to the Bundle? or save and pass rtOpts? env map[string]string - mainModuleExports *goja.Object - moduleVUImpl *moduleVUImpl + mainModule goja.ModuleRecord + mainModuleInstance goja.ModuleInstance + moduleVUImpl *moduleVUImpl } func (bi *BundleInstance) getCallableExport(name string) goja.Callable { @@ -59,7 +60,7 @@ func (bi *BundleInstance) getCallableExport(name string) goja.Callable { } func (bi *BundleInstance) getExported(name string) goja.Value { - return bi.mainModuleExports.Get(name) + return bi.mainModuleInstance.GetBindingValue(name) } // NewBundle creates a new bundle from a source file and a filesystem. @@ -89,7 +90,7 @@ func newBundle( preInitState: piState, } c := bundle.newCompiler(piState.Logger) - bundle.ModuleResolver = modules.NewModuleResolver(getJSModules(), generateFileLoad(bundle), c) + bundle.ModuleResolver = modules.NewModuleResolver(getJSModules(), generateFileLoad(bundle), c, src.URL.JoinPath("..")) // Instantiate the bundle into a new VM using a bound init context. This uses a context with a // runtime, but no state, to allow module-provided types to function within the init context. @@ -103,12 +104,12 @@ func newBundle( }, } vuImpl.eventLoop = eventloop.New(vuImpl) - exports, err := bundle.instantiate(vuImpl, 0) + bi, err := bundle.instantiate(vuImpl, 0) if err != nil { return nil, err } - err = bundle.populateExports(updateOptions, exports) + err = bundle.populateExports(updateOptions, bi) if err != nil { return nil, err } @@ -165,9 +166,9 @@ func (b *Bundle) makeArchive() *lib.Archive { } // populateExports validates and extracts exported objects -func (b *Bundle) populateExports(updateOptions bool, exports *goja.Object) error { - for _, k := range exports.Keys() { - v := exports.Get(k) +func (b *Bundle) populateExports(updateOptions bool, bi *BundleInstance) error { + for _, k := range bi.mainModule.GetExportedNames() { + v := bi.getExported(k) if _, ok := goja.AssertFunction(v); ok && k != consts.Options { b.callableExports[k] = struct{}{} continue @@ -216,40 +217,34 @@ func (b *Bundle) Instantiate(ctx context.Context, vuID uint64) (*BundleInstance, }, } vuImpl.eventLoop = eventloop.New(vuImpl) - exports, err := b.instantiate(vuImpl, vuID) + bi, err := b.instantiate(vuImpl, vuID) if err != nil { return nil, err } - - bi := &BundleInstance{ - Runtime: vuImpl.runtime, - env: b.preInitState.RuntimeOptions.Env, - moduleVUImpl: vuImpl, - mainModuleExports: exports, + if err = bi.manipulateOptions(b.Options); err != nil { + return nil, err } + return bi, nil +} + +func (bi *BundleInstance) manipulateOptions(options lib.Options) error { // Grab any exported functions that could be executed. These were // already pre-validated in cmd.validateScenarioConfig(), just get them here. - jsOptions := exports.Get(consts.Options) + jsOptions := bi.getExported(consts.Options) var jsOptionsObj *goja.Object if common.IsNullish(jsOptions) { - jsOptionsObj = vuImpl.runtime.NewObject() - err := exports.Set(consts.Options, jsOptionsObj) - if err != nil { - return nil, fmt.Errorf("couldn't set exported options with merged values: %w", err) - } - } else { - jsOptionsObj = jsOptions.ToObject(vuImpl.runtime) + return nil } + jsOptionsObj = jsOptions.ToObject(bi.Runtime) var instErr error - b.Options.ForEachSpecified("json", func(key string, val interface{}) { + options.ForEachSpecified("json", func(key string, val interface{}) { if err := jsOptionsObj.Set(key, val); err != nil { instErr = err } }) - - return bi, instErr + return instErr } func (b *Bundle) newCompiler(logger logrus.FieldLogger) *compiler.Compiler { @@ -262,7 +257,7 @@ func (b *Bundle) newCompiler(logger logrus.FieldLogger) *compiler.Compiler { return c } -func (b *Bundle) instantiate(vuImpl *moduleVUImpl, vuID uint64) (*goja.Object, error) { +func (b *Bundle) instantiate(vuImpl *moduleVUImpl, vuID uint64) (*BundleInstance, error) { rt := vuImpl.runtime err := b.setupJSRuntime(rt, int64(vuID), b.preInitState.Logger) if err != nil { @@ -294,14 +289,23 @@ func (b *Bundle) instantiate(vuImpl *moduleVUImpl, vuID uint64) (*goja.Object, e } close(initDone) }() - - var exportsV goja.Value + bi := &BundleInstance{ + Runtime: vuImpl.runtime, + env: b.preInitState.RuntimeOptions.Env, + moduleVUImpl: vuImpl, + } err = common.RunWithPanicCatching(b.preInitState.Logger, rt, func() error { return vuImpl.eventLoop.Start(func() error { //nolint:govet // here we shadow err on purpose var err error - exportsV, err = modSys.RunSourceData(b.sourceData) - return err + + bi.mainModule, err = modSys.RunSourceData(b.sourceData) + if err != nil { + return err + } + // TODO move this here + bi.mainModuleInstance = rt.GetModuleInstance(bi.mainModule) + return nil }) }) @@ -314,14 +318,6 @@ func (b *Bundle) instantiate(vuImpl *moduleVUImpl, vuID uint64) (*goja.Object, e } return nil, err } - if common.IsNullish(exportsV) { - return nil, errors.New("exports must not be set to null or undefined") - } - exports := exportsV.ToObject(vuImpl.runtime) - - if exports == nil { - return nil, errors.New("exports must be an object") - } // If we've already initialized the original VU init context, forbid // any subsequent VUs to open new files @@ -331,7 +327,7 @@ func (b *Bundle) instantiate(vuImpl *moduleVUImpl, vuID uint64) (*goja.Object, e rt.SetRandSource(common.NewRandSource()) - return exports, nil + return bi, nil } func (b *Bundle) setupJSRuntime(rt *goja.Runtime, vuID int64, logger logrus.FieldLogger) error { @@ -402,7 +398,7 @@ func (b *Bundle) setInitGlobals(rt *goja.Runtime, vu *moduleVUImpl, modSys *modu } // This uses the pwd from the requireImpl pwd := impl.internal.CurrentlyRequiredModule() - return openImpl(rt, b.filesystems["file"], &pwd, filename, args...) + return openImpl(rt, b.filesystems["file"], pwd, filename, args...) }) return func() { diff --git a/js/bundle_test.go b/js/bundle_test.go index 53b69809458..894cf583b8d 100644 --- a/js/bundle_test.go +++ b/js/bundle_test.go @@ -84,7 +84,7 @@ func TestNewBundle(t *testing.T) { t.Parallel() _, err := getSimpleBundle(t, "/script.js", "\x00") require.NotNil(t, err) - require.Contains(t, err.Error(), "SyntaxError: file:///script.js: Unexpected character '\x00' (1:0)\n> 1 | \x00\n") + require.Contains(t, err.Error(), "file:///script.js: Line 1:1 Unexpected token ILLEGAL (and 1 more errors)") }) t.Run("Error", func(t *testing.T) { t.Parallel() @@ -532,12 +532,14 @@ func TestNewBundleFromArchive(t *testing.T) { checkArchive(t, arc, baseCompatModeRtOpts, "") }) + /* TODO remove completely - this no longer makes sense t.Run("es6_archive_with_wrong_compat_mode", func(t *testing.T) { t.Parallel() arc, err := getArchive(t, es6Code, baseCompatModeRtOpts) require.Error(t, err) require.Nil(t, arc) }) + */ t.Run("messed_up_archive", func(t *testing.T) { t.Parallel() diff --git a/js/compiler/compiler.go b/js/compiler/compiler.go index fabc5e4d265..832148ec095 100644 --- a/js/compiler/compiler.go +++ b/js/compiler/compiler.go @@ -3,16 +3,11 @@ package compiler import ( - _ "embed" // we need this for embedding Babel "encoding/json" "errors" - "fmt" - "os" - "strconv" - "sync" - "time" "github.com/dop251/goja" + "github.com/dop251/goja/ast" "github.com/dop251/goja/parser" "github.com/go-sourcemap/sourcemap" "github.com/sirupsen/logrus" @@ -20,72 +15,9 @@ import ( "go.k6.io/k6/lib" ) -//go:embed lib/babel.min.js -var babelSrc string - -var ( - defaultOpts = map[string]interface{}{ //nolint:gochecknoglobals - // "presets": []string{"latest"}, - "plugins": []interface{}{ - // es2015 https://github.com/babel/babel/blob/v6.26.0/packages/babel-preset-es2015/src/index.js - // in goja - // []interface{}{"transform-es2015-template-literals", map[string]interface{}{"loose": false, "spec": false}}, - // "transform-es2015-literals", // in goja - // "transform-es2015-function-name", // in goja - // []interface{}{"transform-es2015-arrow-functions", map[string]interface{}{"spec": false}}, // in goja - // "transform-es2015-block-scoped-functions", // in goja - // []interface{}{"transform-es2015-classes", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-object-super", // in goja - // "transform-es2015-shorthand-properties", // in goja - // "transform-es2015-duplicate-keys", // in goja - // []interface{}{"transform-es2015-computed-properties", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-for-of", // in goja - // "transform-es2015-sticky-regex", // in goja - // "transform-es2015-unicode-regex", // in goja - // "check-es2015-constants", // in goja - // []interface{}{"transform-es2015-spread", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-parameters", // in goja - // []interface{}{"transform-es2015-destructuring", map[string]interface{}{"loose": false}}, // in goja - // "transform-es2015-block-scoping", // in goja - // "transform-es2015-typeof-symbol", // in goja - // all the other module plugins are just dropped - []interface{}{"transform-es2015-modules-commonjs", map[string]interface{}{"loose": false}}, - // "transform-regenerator", // Doesn't really work unless regeneratorRuntime is also added - - // es2016 https://github.com/babel/babel/blob/v6.26.0/packages/babel-preset-es2016/src/index.js - // "transform-exponentiation-operator", - - // es2017 https://github.com/babel/babel/blob/v6.26.0/packages/babel-preset-es2017/src/index.js - // "syntax-trailing-function-commas", // in goja - // "transform-async-to-generator", // Doesn't really work unless regeneratorRuntime is also added - }, - "ast": false, - "sourceMaps": false, - "babelrc": false, - "compact": false, - "retainLines": true, - "highlightCode": false, - } - - maxSrcLenForBabelSourceMap = 250 * 1024 //nolint:gochecknoglobals - maxSrcLenForBabelSourceMapOnce sync.Once //nolint:gochecknoglobals - - onceBabelCode sync.Once //nolint:gochecknoglobals - globalBabelCode *goja.Program //nolint:gochecknoglobals - errGlobalBabelCode error //nolint:gochecknoglobals - onceBabel sync.Once //nolint:gochecknoglobals - globalBabel *babel //nolint:gochecknoglobals -) - -const ( - maxSrcLenForBabelSourceMapVarName = "K6_DEBUG_SOURCEMAP_FILESIZE_LIMIT" - sourceMapURLFromBabel = "k6://internal-should-not-leak/file.map" -) - // A Compiler compiles JavaScript source code (ES5.1 or ES6) into a goja.Program type Compiler struct { logger logrus.FieldLogger - babel *babel Options Options } @@ -94,62 +26,6 @@ func New(logger logrus.FieldLogger) *Compiler { return &Compiler{logger: logger} } -// initializeBabel initializes a separate (non-global) instance of babel specifically for this Compiler. -// An error is returned only if babel itself couldn't be parsed/run which should never be possible. -func (c *Compiler) initializeBabel() error { - var err error - if c.babel == nil { - c.babel, err = newBabel() - } - return err -} - -// Transform the given code into ES5 -func (c *Compiler) Transform(src, filename string, inputSrcMap []byte) (code string, srcMap []byte, err error) { - if c.babel == nil { - onceBabel.Do(func() { - globalBabel, err = newBabel() - }) - c.babel = globalBabel - } - if err != nil { - return "", nil, err - } - - sourceMapEnabled := c.Options.SourceMapLoader != nil - maxSrcLenForBabelSourceMapOnce.Do(func() { - // TODO: drop this code and everything it's connected to when babel is dropped - v := os.Getenv(maxSrcLenForBabelSourceMapVarName) //nolint:forbidigo - if len(v) > 0 { - i, err := strconv.Atoi(v) //nolint:govet // we shadow err on purpose - if err != nil { - c.logger.Warnf("Tried to parse %q from %s as integer but couldn't %s\n", - v, maxSrcLenForBabelSourceMapVarName, err) - return - } - maxSrcLenForBabelSourceMap = i - } - }) - if sourceMapEnabled && len(src) > maxSrcLenForBabelSourceMap { - sourceMapEnabled = false - c.logger.Warnf("The source for `%s` needs to go through babel but is over %d bytes. "+ - "For performance reasons source map support will be disabled for this particular file.", - filename, maxSrcLenForBabelSourceMap) - } - - // check that babel will likely be able to parse the inputSrcMap - if sourceMapEnabled && len(inputSrcMap) != 0 { - if err = verifySourceMapForBabel(inputSrcMap); err != nil { - sourceMapEnabled = false - inputSrcMap = nil - c.logger.WithError(err).Warnf( - "The source for `%s` needs to be transpiled by Babel, but its source map will"+ - " not be accepted by Babel, so it was disabled", filename) - } - } - return c.babel.transformImpl(c.logger, src, filename, sourceMapEnabled, inputSrcMap) -} - // Options are options to the compiler type Options struct { CompatibilityMode lib.CompatibilityMode @@ -157,8 +33,8 @@ type Options struct { Strict bool } -// compilationState is helper struct to keep the state of a compilation -type compilationState struct { +// parseState is helper struct to keep the state of a compilation +type parseState struct { // set when we couldn't load external source map so we can try parsing without loading it couldntLoadSourceMap bool // srcMap is the current full sourceMap that has been generated read so far @@ -166,26 +42,25 @@ type compilationState struct { srcMapError error wrapped bool // whether the original source is wrapped in a function to make it a commonjs module - compiler *Compiler + loader func(string) ([]byte, error) +} + +// Parse the program in the given CompatibilityMode, wrapping it between pre and post code +func (c *Compiler) Parse(src, filename string, wrap bool) (*ast.Program, bool, error) { + return c.parseImpl(src, filename, wrap) } // Compile the program in the given CompatibilityMode, wrapping it between pre and post code // TODO isESM will be used once goja support ESM modules natively func (c *Compiler) Compile(src, filename string, isESM bool) (*goja.Program, string, error) { - return c.compileImpl(src, filename, !isESM, c.Options.CompatibilityMode, nil) + return c.compileImpl(src, filename, !isESM) } // sourceMapLoader is to be used with goja's WithSourceMapLoader // it not only gets the file from disk in the simple case, but also returns it if the map was generated from babel // additioanlly it fixes off by one error in commonjs dependencies due to having to wrap them in a function. -func (c *compilationState) sourceMapLoader(path string) ([]byte, error) { - if path == sourceMapURLFromBabel { - if c.wrapped { - return c.increaseMappingsByOne(c.srcMap) - } - return c.srcMap, nil - } - c.srcMap, c.srcMapError = c.compiler.Options.SourceMapLoader(path) +func (c *parseState) sourceMapLoader(path string) ([]byte, error) { + c.srcMap, c.srcMapError = c.loader(path) if c.srcMapError != nil { c.couldntLoadSourceMap = true return nil, c.srcMapError @@ -202,75 +77,62 @@ func (c *compilationState) sourceMapLoader(path string) ([]byte, error) { return c.srcMap, nil } -func (c *Compiler) compileImpl( - src, filename string, wrap bool, compatibilityMode lib.CompatibilityMode, srcMap []byte, -) (*goja.Program, string, error) { +func (c *Compiler) parseImpl(src, filename string, wrap bool) (*ast.Program, bool, error) { code := src - state := compilationState{srcMap: srcMap, compiler: c, wrapped: wrap} - if wrap { // the lines in the sourcemap (if available) will be fixed by increaseMappingsByOne + state := parseState{loader: c.Options.SourceMapLoader, wrapped: wrap} + if state.wrapped { // the lines in the sourcemap (if available) will be fixed by increaseMappingsByOne code = "(function(module, exports){\n" + code + "\n})\n" } opts := parser.WithDisableSourceMaps if c.Options.SourceMapLoader != nil { opts = parser.WithSourceMapLoader(state.sourceMapLoader) } - ast, err := parser.ParseFile(nil, filename, code, 0, opts) + ast, err := parser.ParseFile(nil, filename, code, 0, opts, parser.IsModule) if state.couldntLoadSourceMap { state.couldntLoadSourceMap = false // reset // we probably don't want to abort scripts which have source maps but they can't be found, // this also will be a breaking change, so if we couldn't we retry with it disabled c.logger.WithError(state.srcMapError).Warnf("Couldn't load source map for %s", filename) - ast, err = parser.ParseFile(nil, filename, code, 0, parser.WithDisableSourceMaps) + ast, err = parser.ParseFile(nil, filename, code, 0, parser.WithDisableSourceMaps, parser.IsModule) } + if err != nil { - if compatibilityMode == lib.CompatibilityModeExtended { - code, state.srcMap, err = c.Transform(src, filename, state.srcMap) - if err != nil { - return nil, code, err - } - // the compatibility mode "decreases" here as we shouldn't transform twice - return c.compileImpl(code, filename, wrap, lib.CompatibilityModeBase, state.srcMap) - } - return nil, code, err + return nil, false, err } - pgm, err := goja.CompileAST(ast, c.Options.Strict) - return pgm, code, err -} - -type babel struct { - vm *goja.Runtime - this goja.Value - transform goja.Callable - m sync.Mutex + isModule := len(ast.ExportEntries) > 0 || len(ast.ImportEntries) > 0 || ast.HasTLA + return ast, isModule, nil } -func newBabel() (*babel, error) { - onceBabelCode.Do(func() { - globalBabelCode, errGlobalBabelCode = goja.Compile("", babelSrc, false) - }) - if errGlobalBabelCode != nil { - return nil, errGlobalBabelCode +func (c *Compiler) compileImpl(src, filename string, wrap bool) (*goja.Program, string, error) { + code := src + state := parseState{loader: c.Options.SourceMapLoader, wrapped: wrap} + if wrap { // the lines in the sourcemap (if available) will be fixed by increaseMappingsByOne + code = "(function(module, exports){\n" + code + "\n})\n" } - vm := goja.New() - _, err := vm.RunProgram(globalBabelCode) - if err != nil { - return nil, err + opts := parser.WithDisableSourceMaps + if c.Options.SourceMapLoader != nil { + opts = parser.WithSourceMapLoader(state.sourceMapLoader) } + ast, err := parser.ParseFile(nil, filename, code, 0, opts, parser.IsModule) - this := vm.Get("Babel") - bObj := this.ToObject(vm) - result := &babel{vm: vm, this: this} - if err = vm.ExportTo(bObj.Get("transform"), &result.transform); err != nil { - return nil, err + if state.couldntLoadSourceMap { + state.couldntLoadSourceMap = false // reset + // we probably don't want to abort scripts which have source maps but they can't be found, + // this also will be a breaking change, so if we couldn't we retry with it disabled + c.logger.WithError(state.srcMapError).Warnf("Couldn't load source map for %s", filename) + ast, err = parser.ParseFile(nil, filename, code, 0, parser.WithDisableSourceMaps, parser.IsModule) } - - return result, err + if err != nil { + return nil, code, err + } + pgm, err := goja.CompileAST(ast, c.Options.Strict) + return pgm, code, err } // increaseMappingsByOne increases the lines in the sourcemap by line so that it fixes the case where we need to wrap a // required file in a function to support/emulate commonjs -func (c *compilationState) increaseMappingsByOne(sourceMap []byte) ([]byte, error) { +func (c *parseState) increaseMappingsByOne(sourceMap []byte) ([]byte, error) { var err error m := make(map[string]interface{}) if err = json.Unmarshal(sourceMap, &m); err != nil { @@ -300,65 +162,6 @@ func (c *compilationState) increaseMappingsByOne(sourceMap []byte) ([]byte, erro return json.Marshal(m) } -// transformImpl the given code into ES5, while synchronizing to ensure only a single -// bundle instance / Goja VM is in use at a time. -func (b *babel) transformImpl( - logger logrus.FieldLogger, src, filename string, sourceMapsEnabled bool, inputSrcMap []byte, -) (string, []byte, error) { - b.m.Lock() - defer b.m.Unlock() - opts := make(map[string]interface{}) - for k, v := range defaultOpts { - opts[k] = v - } - if sourceMapsEnabled { - // given that the source map should provide accurate lines(and columns), this option isn't needed - // it also happens to make very long and awkward lines, especially around import/exports and definitely a lot - // less readable overall. Hopefully it also has some performance improvement not trying to keep the same lines - opts["retainLines"] = false - opts["sourceMaps"] = true - if inputSrcMap != nil { - srcMap := new(map[string]interface{}) - if err := json.Unmarshal(inputSrcMap, &srcMap); err != nil { - return "", nil, err - } - opts["inputSourceMap"] = srcMap - } - } - opts["filename"] = filename - - startTime := time.Now() - v, err := b.transform(b.this, b.vm.ToValue(src), b.vm.ToValue(opts)) - if err != nil { - return "", nil, err - } - logger.WithField("t", time.Since(startTime)).Debug("Babel: Transformed") - - vO := v.ToObject(b.vm) - var code string - if err = b.vm.ExportTo(vO.Get("code"), &code); err != nil { - return code, nil, err - } - if !sourceMapsEnabled { - return code, nil, nil - } - - // this is to make goja try to load a sourcemap. - // it is a special url as it should never leak outside of this code - // additionally the alternative support from babel is to embed *the whole* sourcemap at the end - code += "\n//# sourceMappingURL=" + sourceMapURLFromBabel - stringify, err := b.vm.RunString("(function(m) { return JSON.stringify(m)})") - if err != nil { - return code, nil, err - } - c, _ := goja.AssertFunction(stringify) - mapAsJSON, err := c(goja.Undefined(), vO.Get("map")) - if err != nil { - return code, nil, err - } - return code, []byte(mapAsJSON.String()), nil -} - // Pool is a pool of compilers so it can be used easier in parallel tests as they have their own babel. type Pool struct { c chan *Compiler @@ -374,10 +177,6 @@ func NewPool(logger logrus.FieldLogger, count int) *Pool { for i := 0; i < count; i++ { go func() { co := New(logger) - err := co.initializeBabel() - if err != nil { - panic(err) - } c.Put(co) }() } @@ -395,27 +194,3 @@ func (c *Pool) Get() *Compiler { func (c *Pool) Put(co *Compiler) { c.c <- co } - -func verifySourceMapForBabel(srcMap []byte) error { - // this function exists to do what babel checks in sourcemap before we give it to it. - m := make(map[string]json.RawMessage) - err := json.Unmarshal(srcMap, &m) - if err != nil { - return fmt.Errorf("source map is not valid json: %w", err) - } - // there are no checks on it's value in babel - // we technically only support v3 though - if _, ok := m["version"]; !ok { - return fmt.Errorf("source map missing required 'version' field") - } - - // This actually gets checked by the go implementation so it's not really necessary - if _, ok := m["mappings"]; !ok { - return fmt.Errorf("source map missing required 'mappings' field") - } - // the go implementation checks the value even if it doesn't require it exists - if _, ok := m["sources"]; !ok { - return fmt.Errorf("source map missing required 'sources' field") - } - return nil -} diff --git a/js/compiler/compiler_test.go b/js/compiler/compiler_test.go index 6f8eae0937b..4a036fdd4ef 100644 --- a/js/compiler/compiler_test.go +++ b/js/compiler/compiler_test.go @@ -1,12 +1,11 @@ package compiler import ( - "errors" "io" - "strings" "testing" "github.com/dop251/goja" + "github.com/dop251/goja/parser" "github.com/sirupsen/logrus" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" @@ -15,55 +14,6 @@ import ( "go.k6.io/k6/lib/testutils" ) -func TestTransform(t *testing.T) { - t.Parallel() - t.Run("blank", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src, _, err := c.Transform("", "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, `"use strict";`, src) - }) - t.Run("double-arrow", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src, _, err := c.Transform("()=> true", "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, `"use strict";() => true;`, src) - }) - t.Run("longer", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src, _, err := c.Transform(strings.Join([]string{ - `function add(a, b) {`, - ` return a + b;`, - `};`, - ``, - `let res = add(1, 2);`, - }, "\n"), "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, strings.Join([]string{ - `"use strict";function add(a, b) {`, - ` return a + b;`, - `};`, - ``, - `let res = add(1, 2);`, - }, "\n"), src) - }) - - t.Run("double-arrow with sourceMap", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - c.Options.SourceMapLoader = func(string) ([]byte, error) { return nil, errors.New("shouldn't be called") } - src, _, err := c.Transform("()=> true", "test.js", nil) - assert.NoError(t, err) - assert.Equal(t, `"use strict"; - -() => true; -//# sourceMappingURL=k6://internal-should-not-leak/file.map`, src) - }) -} - func TestCompile(t *testing.T) { t.Parallel() t.Run("ES5", func(t *testing.T) { @@ -74,8 +24,9 @@ func TestCompile(t *testing.T) { require.NoError(t, err) assert.Equal(t, src, code) v, err := goja.New().RunProgram(pgm) - require.NoError(t, err) - assert.Equal(t, int64(3), v.Export()) + if assert.NoError(t, err) { + assert.Equal(t, int64(3), v.Export()) + } }) t.Run("ES5 Wrap", func(t *testing.T) { @@ -87,52 +38,37 @@ func TestCompile(t *testing.T) { assert.Equal(t, "(function(module, exports){\nexports.d=1+(function() { return 2; })()\n})\n", code) rt := goja.New() v, err := rt.RunProgram(pgm) - require.NoError(t, err) - fn, ok := goja.AssertFunction(v) - require.True(t, ok, "not a function") - exp := make(map[string]goja.Value) - _, err = fn(goja.Undefined(), goja.Undefined(), rt.ToValue(exp)) - require.NoError(t, err) - assert.Equal(t, int64(3), exp["d"].Export()) + if assert.NoError(t, err) { + fn, ok := goja.AssertFunction(v) + if assert.True(t, ok, "not a function") { + exp := make(map[string]goja.Value) + _, err := fn(goja.Undefined(), goja.Undefined(), rt.ToValue(exp)) + if assert.NoError(t, err) { + assert.Equal(t, int64(3), exp["d"].Export()) + } + } + } }) - t.Run("ES5 Invalid", func(t *testing.T) { - t.Parallel() - c := New(testutils.NewLogger(t)) - src := `1+(function() { return 2; )()` - c.Options.CompatibilityMode = lib.CompatibilityModeExtended - _, _, err := c.Compile(src, "script.js", false) - assert.IsType(t, &goja.Exception{}, err) - assert.Contains(t, err.Error(), `SyntaxError: script.js: Unexpected token (1:26) -> 1 | 1+(function() { return 2; )()`) - }) t.Run("ES6", func(t *testing.T) { t.Parallel() c := New(testutils.NewLogger(t)) c.Options.CompatibilityMode = lib.CompatibilityModeExtended - pgm, code, err := c.Compile(`import "something"`, "script.js", true) - require.NoError(t, err) - assert.Equal(t, `"use strict";require("something");`, - code) - rt := goja.New() - var requireCalled bool - require.NoError(t, rt.Set("require", func(s string) { - assert.Equal(t, "something", s) - requireCalled = true - })) - _, err = rt.RunProgram(pgm) + _, code, err := c.Compile(`import "something"`, "script.js", true) require.NoError(t, err) - require.True(t, requireCalled) + assert.Equal(t, `import "something"`, code) + // TODO running this is a bit more involved :( }) t.Run("Wrap", func(t *testing.T) { + // This only works with `require` as wrapping means the import/export won't be top level and that is forbidden t.Parallel() c := New(testutils.NewLogger(t)) c.Options.CompatibilityMode = lib.CompatibilityModeExtended - pgm, code, err := c.Compile(`import "something";`, "script.js", false) + pgm, code, err := c.Compile(`require("something");`, "script.js", false) require.NoError(t, err) assert.Equal(t, `(function(module, exports){ -"use strict";require("something"); +require("something"); }) `, code) var requireCalled bool @@ -155,9 +91,8 @@ func TestCompile(t *testing.T) { c := New(testutils.NewLogger(t)) c.Options.CompatibilityMode = lib.CompatibilityModeExtended _, _, err := c.Compile(`1+(=>2)()`, "script.js", true) - assert.IsType(t, &goja.Exception{}, err) - assert.Contains(t, err.Error(), `SyntaxError: script.js: Unexpected token (1:3) -> 1 | 1+(=>2)()`) + assert.IsType(t, parser.ErrorList{}, err) + assert.ErrorContains(t, err, `script.js: Line 1:4 Unexpected token => (and 1 more errors)`) }) } @@ -168,8 +103,10 @@ func TestCorruptSourceMap(t *testing.T) { logger := logrus.New() logger.SetLevel(logrus.DebugLevel) logger.Out = io.Discard - hook := testutils.NewLogHook(logrus.InfoLevel, logrus.WarnLevel) - logger.AddHook(hook) + hook := testutils.SimpleLogrusHook{ + HookedLevels: []logrus.Level{logrus.InfoLevel, logrus.WarnLevel}, + } + logger.AddHook(&hook) compiler := New(logger) compiler.Options = Options{ @@ -191,14 +128,17 @@ func TestCorruptSourceMap(t *testing.T) { func TestCorruptSourceMapOnlyForBabel(t *testing.T) { t.Parallel() + // This test is now kind of pointless // this a valid source map for the go implementation but babel doesn't like it corruptSourceMap := []byte(`{"mappings": ";"}`) logger := logrus.New() logger.SetLevel(logrus.DebugLevel) logger.Out = io.Discard - hook := testutils.NewLogHook(logrus.InfoLevel, logrus.WarnLevel) - logger.AddHook(hook) + hook := testutils.SimpleLogrusHook{ + HookedLevels: []logrus.Level{logrus.InfoLevel, logrus.WarnLevel}, + } + logger.AddHook(&hook) compiler := New(logger) compiler.Options = Options{ @@ -208,15 +148,10 @@ func TestCorruptSourceMapOnlyForBabel(t *testing.T) { return corruptSourceMap, nil }, } - _, _, err := compiler.Compile("import 'something';\n//# sourceMappingURL=somefile", "somefile", false) + _, _, err := compiler.Compile("import 'something';\n//# sourceMappingURL=somefile", "somefile", true) require.NoError(t, err) entries := hook.Drain() - require.Len(t, entries, 1) - msg, err := entries[0].String() // we need this in order to get the field error - require.NoError(t, err) - - require.Contains(t, msg, `needs to be transpiled by Babel, but its source map will not be accepted by Babel`) - require.Contains(t, msg, `source map missing required 'version' field`) + require.Empty(t, entries) } func TestMinimalSourceMap(t *testing.T) { @@ -227,8 +162,10 @@ func TestMinimalSourceMap(t *testing.T) { logger := logrus.New() logger.SetLevel(logrus.DebugLevel) logger.Out = io.Discard - hook := 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Exported identifiers must be unique.")},z.parseExportSpecifiers=function(){var e=[],t=!0,r=void 0;for(this.expect(R.braceL);!this.eat(R.braceR);){if(t)t=!1;else if(this.expect(R.comma),this.eat(R.braceR))break;var n=this.match(R._default);n&&!r&&(r=!0);var i=this.startNode();i.local=this.parseIdentifier(n),i.exported=this.eatContextual("as")?this.parseIdentifier(!0):i.local.__clone(),e.push(this.finishNode(i,"ExportSpecifier"))}return r&&!this.isContextual("from")&&this.unexpected(),e},z.parseImport=function(e){return this.eat(R._import),this.match(R.string)?(e.specifiers=[],e.source=this.parseExprAtom()):(e.specifiers=[],this.parseImportSpecifiers(e),this.expectContextual("from"),e.source=this.match(R.string)?this.parseExprAtom():this.unexpected()),this.semicolon(),this.finishNode(e,"ImportDeclaration")},z.parseImportSpecifiers=function(e){var t=!0;if(this.match(R.name)){var r=this.state.start,n=this.state.startLoc;if(e.specifiers.push(this.parseImportSpecifierDefault(this.parseIdentifier(),r,n)),!this.eat(R.comma))return}if(this.match(R.star)){var i=this.startNode();return this.next(),this.expectContextual("as"),i.local=this.parseIdentifier(),this.checkLVal(i.local,!0,void 0,"import namespace specifier"),void e.specifiers.push(this.finishNode(i,"ImportNamespaceSpecifier"))}for(this.expect(R.braceL);!this.eat(R.braceR);){if(t)t=!1;else if(this.eat(R.colon)&&this.unexpected(null,"ES2015 named imports do not destructure. Use another statement for destructuring after the import."),this.expect(R.comma),this.eat(R.braceR))break;this.parseImportSpecifier(e)}},z.parseImportSpecifier=function(e){var t=this.startNode();t.imported=this.parseIdentifier(!0),this.eatContextual("as")?t.local=this.parseIdentifier():(this.checkReservedWord(t.imported.name,t.start,!0,!0),t.local=t.imported.__clone()),this.checkLVal(t.local,!0,void 0,"import specifier"),e.specifiers.push(this.finishNode(t,"ImportSpecifier"))},z.parseImportSpecifierDefault=function(e,t,r){var n=this.startNodeAt(t,r);return n.local=e,this.checkLVal(n.local,!0,void 0,"default import specifier"),this.finishNode(n,"ImportDefaultSpecifier")};var ee=J.prototype;ee.toAssignable=function(e,t,r){if(e)switch(e.type){case"Identifier":case"ObjectPattern":case"ArrayPattern":case"AssignmentPattern":break;case"ObjectExpression":e.type="ObjectPattern";for(var n=e.properties,i=Array.isArray(n),s=0,n=i?n:n[Symbol.iterator]();;){var a;if(i){if(s>=n.length)break;a=n[s++]}else{if(s=n.next(),s.done)break;a=s.value}var o=a;"ObjectMethod"===o.type?"get"===o.kind||"set"===o.kind?this.raise(o.key.start,"Object pattern can't contain getter or setter"):this.raise(o.key.start,"Object pattern can't contain methods"):this.toAssignable(o,t,"object destructuring pattern")}break;case"ObjectProperty":this.toAssignable(e.value,t,r);break;case"SpreadProperty":e.type="RestProperty";var u=e.argument;this.toAssignable(u,t,r);break;case"ArrayExpression":e.type="ArrayPattern",this.toAssignableList(e.elements,t,r);break;case"AssignmentExpression":"="===e.operator?(e.type="AssignmentPattern",delete e.operator):this.raise(e.left.end,"Only '=' operator can be used for specifying default value.");break;case"MemberExpression":if(!t)break;default:var l="Invalid left-hand side"+(r?" in "+r:"expression");this.raise(e.start,l)}return e},ee.toAssignableList=function(e,t,r){var n=e.length;if(n){var i=e[n-1];if(i&&"RestElement"===i.type)--n;else if(i&&"SpreadElement"===i.type){i.type="RestElement";var s=i.argument;this.toAssignable(s,t,r),"Identifier"!==s.type&&"MemberExpression"!==s.type&&"ArrayPattern"!==s.type&&this.unexpected(s.start),--n}}for(var a=0;a=s.length)break;u=s[o++]}else{if(o=s.next(),o.done)break;u=o.value}var l=u;"ObjectProperty"===l.type&&(l=l.value),this.checkLVal(l,t,r,"object destructuring pattern")}break;case"ArrayPattern":for(var c=e.elements,f=Array.isArray(c),p=0,c=f?c:c[Symbol.iterator]();;){var d;if(f){if(p>=c.length)break;d=c[p++]}else{if(p=c.next(),p.done)break;d=p.value}var h=d;h&&this.checkLVal(h,t,r,"array destructuring pattern")}break;case"AssignmentPattern":this.checkLVal(e.left,t,r,"assignment pattern");break;case"RestProperty":this.checkLVal(e.argument,t,r,"rest property");break;case"RestElement":this.checkLVal(e.argument,t,r,"rest element");break;default:var m=(t?"Binding invalid":"Invalid")+" left-hand side"+(n?" in "+n:"expression");this.raise(e.start,m)}};var te=J.prototype;te.checkPropClash=function(e,t){if(!e.computed&&!e.kind){var r=e.key;"__proto__"===("Identifier"===r.type?r.name:String(r.value))&&(t.proto&&this.raise(r.start,"Redefinition of __proto__ property"),t.proto=!0)}},te.getExpression=function(){this.nextToken();var e=this.parseExpression();return this.match(R.eof)||this.unexpected(),e},te.parseExpression=function(e,t){var r=this.state.start,n=this.state.startLoc,i=this.parseMaybeAssign(e,t);if(this.match(R.comma)){var s=this.startNodeAt(r,n);for(s.expressions=[i];this.eat(R.comma);)s.expressions.push(this.parseMaybeAssign(e,t));return this.toReferencedList(s.expressions),this.finishNode(s,"SequenceExpression")}return i},te.parseMaybeAssign=function(e,t,r,n){var i=this.state.start,s=this.state.startLoc;if(this.match(R._yield)&&this.state.inGenerator){var a=this.parseYield();return r&&(a=r.call(this,a,i,s)),a}var o=void 0;t?o=!1:(t={start:0},o=!0),(this.match(R.parenL)||this.match(R.name))&&(this.state.potentialArrowAt=this.state.start);var u=this.parseMaybeConditional(e,t,n);if(r&&(u=r.call(this,u,i,s)),this.state.type.isAssign){var l=this.startNodeAt(i,s);if(l.operator=this.state.value,l.left=this.match(R.eq)?this.toAssignable(u,void 0,"assignment expression"):u,t.start=0,this.checkLVal(u,void 0,void 0,"assignment expression"),u.extra&&u.extra.parenthesized){var c=void 0;"ObjectPattern"===u.type?c="`({a}) = 0` use `({a} = 0)`":"ArrayPattern"===u.type&&(c="`([a]) = 0` use `([a] = 0)`"),c&&this.raise(u.start,"You're trying to assign to a parenthesized expression, eg. instead of "+c)}return this.next(),l.right=this.parseMaybeAssign(e),this.finishNode(l,"AssignmentExpression")}return o&&t.start&&this.unexpected(t.start),u},te.parseMaybeConditional=function(e,t,r){var n=this.state.start,i=this.state.startLoc,s=this.parseExprOps(e,t);return t&&t.start?s:this.parseConditional(s,e,n,i,r)},te.parseConditional=function(e,t,r,n){if(this.eat(R.question)){var i=this.startNodeAt(r,n);return i.test=e,i.consequent=this.parseMaybeAssign(),this.expect(R.colon),i.alternate=this.parseMaybeAssign(t),this.finishNode(i,"ConditionalExpression")}return e},te.parseExprOps=function(e,t){var r=this.state.start,n=this.state.startLoc,i=this.parseMaybeUnary(t);return t&&t.start?i:this.parseExprOp(i,r,n,-1,e)},te.parseExprOp=function(e,t,r,n,i){var s=this.state.type.binop;if(!(null==s||i&&this.match(R._in))&&s>n){var a=this.startNodeAt(t,r);a.left=e,a.operator=this.state.value,"**"!==a.operator||"UnaryExpression"!==e.type||!e.extra||e.extra.parenthesizedArgument||e.extra.parenthesized||this.raise(e.argument.start,"Illegal expression. Wrap left hand side or entire exponentiation in parentheses.");var o=this.state.type;this.next();var u=this.state.start,l=this.state.startLoc;return a.right=this.parseExprOp(this.parseMaybeUnary(),u,l,o.rightAssociative?s-1:s,i),this.finishNode(a,o===R.logicalOR||o===R.logicalAND?"LogicalExpression":"BinaryExpression"),this.parseExprOp(a,t,r,n,i)}return e},te.parseMaybeUnary=function(e){if(this.state.type.prefix){var t=this.startNode(),r=this.match(R.incDec);t.operator=this.state.value,t.prefix=!0,this.next();var n=this.state.type;return t.argument=this.parseMaybeUnary(),this.addExtra(t,"parenthesizedArgument",!(n!==R.parenL||t.argument.extra&&t.argument.extra.parenthesized)),e&&e.start&&this.unexpected(e.start),r?this.checkLVal(t.argument,void 0,void 0,"prefix operation"):this.state.strict&&"delete"===t.operator&&"Identifier"===t.argument.type&&this.raise(t.start,"Deleting local variable in strict mode"),this.finishNode(t,r?"UpdateExpression":"UnaryExpression")}var i=this.state.start,s=this.state.startLoc,a=this.parseExprSubscripts(e);if(e&&e.start)return a;for(;this.state.type.postfix&&!this.canInsertSemicolon();){var o=this.startNodeAt(i,s);o.operator=this.state.value,o.prefix=!1,o.argument=a,this.checkLVal(a,void 0,void 0,"postfix operation"),this.next(),a=this.finishNode(o,"UpdateExpression")}return a},te.parseExprSubscripts=function(e){var t=this.state.start,r=this.state.startLoc,n=this.state.potentialArrowAt,i=this.parseExprAtom(e);return"ArrowFunctionExpression"===i.type&&i.start===n?i:e&&e.start?i:this.parseSubscripts(i,t,r)},te.parseSubscripts=function(e,t,r,n){for(;;){if(!n&&this.eat(R.doubleColon)){var i=this.startNodeAt(t,r);return i.object=e,i.callee=this.parseNoCallExpr(),this.parseSubscripts(this.finishNode(i,"BindExpression"),t,r,n)}if(this.eat(R.dot)){var s=this.startNodeAt(t,r);s.object=e,s.property=this.parseIdentifier(!0),s.computed=!1,e=this.finishNode(s,"MemberExpression")}else if(this.eat(R.bracketL)){var a=this.startNodeAt(t,r);a.object=e,a.property=this.parseExpression(),a.computed=!0,this.expect(R.bracketR),e=this.finishNode(a,"MemberExpression")}else if(!n&&this.match(R.parenL)){var o=this.state.potentialArrowAt===e.start&&"Identifier"===e.type&&"async"===e.name&&!this.canInsertSemicolon();this.next();var u=this.startNodeAt(t,r);if(u.callee=e,u.arguments=this.parseCallExpressionArguments(R.parenR,o),"Import"===u.callee.type&&1!==u.arguments.length&&this.raise(u.start,"import() requires exactly one argument"),e=this.finishNode(u,"CallExpression"),o&&this.shouldParseAsyncArrow())return this.parseAsyncArrowFromCallExpression(this.startNodeAt(t,r),u);this.toReferencedList(u.arguments)}else{if(!this.match(R.backQuote))return e;var l=this.startNodeAt(t,r);l.tag=e,l.quasi=this.parseTemplate(!0),e=this.finishNode(l,"TaggedTemplateExpression")}}},te.parseCallExpressionArguments=function(e,t){for(var r=[],n=void 0,i=!0;!this.eat(e);){if(i)i=!1;else if(this.expect(R.comma),this.eat(e))break;this.match(R.parenL)&&!n&&(n=this.state.start),r.push(this.parseExprListItem(!1,t?{start:0}:void 0,t?{start:0}:void 0))}return t&&n&&this.shouldParseAsyncArrow()&&this.unexpected(),r},te.shouldParseAsyncArrow=function(){return this.match(R.arrow)},te.parseAsyncArrowFromCallExpression=function(e,t){return this.expect(R.arrow),this.parseArrowExpression(e,t.arguments,!0)},te.parseNoCallExpr=function(){var e=this.state.start,t=this.state.startLoc;return this.parseSubscripts(this.parseExprAtom(),e,t,!0)},te.parseExprAtom=function(e){var t=this.state.potentialArrowAt===this.state.start,r=void 0;switch(this.state.type){case R._super:return this.state.inMethod||this.state.inClassProperty||this.options.allowSuperOutsideMethod||this.raise(this.state.start,"'super' outside of function or class"),r=this.startNode(),this.next(),this.match(R.parenL)||this.match(R.bracketL)||this.match(R.dot)||this.unexpected(),this.match(R.parenL)&&"constructor"!==this.state.inMethod&&!this.options.allowSuperOutsideMethod&&this.raise(r.start,"super() outside of class constructor"),this.finishNode(r,"Super");case R._import:return this.hasPlugin("dynamicImport")||this.unexpected(),r=this.startNode(),this.next(),this.match(R.parenL)||this.unexpected(null,R.parenL),this.finishNode(r,"Import");case R._this:return r=this.startNode(),this.next(),this.finishNode(r,"ThisExpression");case R._yield:this.state.inGenerator&&this.unexpected();case R.name:r=this.startNode();var n="await"===this.state.value&&this.state.inAsync,i=this.shouldAllowYieldIdentifier(),s=this.parseIdentifier(n||i);if("await"===s.name){if(this.state.inAsync||this.inModule)return this.parseAwait(r)}else{if("async"===s.name&&this.match(R._function)&&!this.canInsertSemicolon())return this.next(),this.parseFunction(r,!1,!1,!0);if(t&&"async"===s.name&&this.match(R.name)){var a=[this.parseIdentifier()];return this.expect(R.arrow),this.parseArrowExpression(r,a,!0)}}return t&&!this.canInsertSemicolon()&&this.eat(R.arrow)?this.parseArrowExpression(r,[s]):s;case R._do:if(this.hasPlugin("doExpressions")){var o=this.startNode();this.next();var u=this.state.inFunction,l=this.state.labels;return this.state.labels=[],this.state.inFunction=!1,o.body=this.parseBlock(!1,!0),this.state.inFunction=u,this.state.labels=l,this.finishNode(o,"DoExpression")}case R.regexp:var c=this.state.value;return r=this.parseLiteral(c.value,"RegExpLiteral"),r.pattern=c.pattern,r.flags=c.flags,r;case R.num:return this.parseLiteral(this.state.value,"NumericLiteral");case R.string:return this.parseLiteral(this.state.value,"StringLiteral");case R._null:return r=this.startNode(),this.next(),this.finishNode(r,"NullLiteral");case R._true:case R._false:return r=this.startNode(),r.value=this.match(R._true),this.next(),this.finishNode(r,"BooleanLiteral");case R.parenL:return this.parseParenAndDistinguishExpression(null,null,t);case R.bracketL:return r=this.startNode(),this.next(),r.elements=this.parseExprList(R.bracketR,!0,e),this.toReferencedList(r.elements),this.finishNode(r,"ArrayExpression");case R.braceL:return this.parseObj(!1,e);case R._function:return this.parseFunctionExpression();case R.at:this.parseDecorators();case R._class:return r=this.startNode(),this.takeDecorators(r),this.parseClass(r,!1);case R._new:return this.parseNew();case R.backQuote:return this.parseTemplate(!1);case R.doubleColon:r=this.startNode(),this.next(),r.object=null;var f=r.callee=this.parseNoCallExpr();if("MemberExpression"===f.type)return this.finishNode(r,"BindExpression");this.raise(f.start,"Binding should be performed on object property.");default:this.unexpected()}},te.parseFunctionExpression=function(){var e=this.startNode(),t=this.parseIdentifier(!0);return this.state.inGenerator&&this.eat(R.dot)&&this.hasPlugin("functionSent")?this.parseMetaProperty(e,t,"sent"):this.parseFunction(e,!1)},te.parseMetaProperty=function(e,t,r){return e.meta=t,e.property=this.parseIdentifier(!0),e.property.name!==r&&this.raise(e.property.start,"The only valid meta property for new is "+t.name+"."+r),this.finishNode(e,"MetaProperty")},te.parseLiteral=function(e,t,r,n){r=r||this.state.start,n=n||this.state.startLoc;var i=this.startNodeAt(r,n);return this.addExtra(i,"rawValue",e),this.addExtra(i,"raw",this.input.slice(r,this.state.end)),i.value=e,this.next(),this.finishNode(i,t)},te.parseParenExpression=function(){this.expect(R.parenL);var e=this.parseExpression();return this.expect(R.parenR),e},te.parseParenAndDistinguishExpression=function(e,t,r){e=e||this.state.start,t=t||this.state.startLoc;var n=void 0;this.expect(R.parenL);for(var i=this.state.start,s=this.state.startLoc,a=[],o={start:0},u={start:0},l=!0,c=void 0,f=void 0;!this.match(R.parenR);){if(l)l=!1;else if(this.expect(R.comma,u.start||null),this.match(R.parenR)){f=this.state.start;break} -if(this.match(R.ellipsis)){var p=this.state.start,d=this.state.startLoc;c=this.state.start,a.push(this.parseParenItem(this.parseRest(),p,d));break}a.push(this.parseMaybeAssign(!1,o,this.parseParenItem,u))}var h=this.state.start,m=this.state.startLoc;this.expect(R.parenR);var y=this.startNodeAt(e,t);if(r&&this.shouldParseArrow()&&(y=this.parseArrow(y))){for(var v=a,g=Array.isArray(v),b=0,v=g?v:v[Symbol.iterator]();;){var E;if(g){if(b>=v.length)break;E=v[b++]}else{if(b=v.next(),b.done)break;E=b.value}var x=E;x.extra&&x.extra.parenthesized&&this.unexpected(x.extra.parenStart)}return this.parseArrowExpression(y,a)}return a.length||this.unexpected(this.state.lastTokStart),f&&this.unexpected(f),c&&this.unexpected(c),o.start&&this.unexpected(o.start),u.start&&this.unexpected(u.start),a.length>1?(n=this.startNodeAt(i,s),n.expressions=a,this.toReferencedList(n.expressions),this.finishNodeAt(n,"SequenceExpression",h,m)):n=a[0],this.addExtra(n,"parenthesized",!0),this.addExtra(n,"parenStart",e),n},te.shouldParseArrow=function(){return!this.canInsertSemicolon()},te.parseArrow=function(e){if(this.eat(R.arrow))return e},te.parseParenItem=function(e){return e},te.parseNew=function(){var e=this.startNode(),t=this.parseIdentifier(!0);if(this.eat(R.dot)){var r=this.parseMetaProperty(e,t,"target");return this.state.inFunction||this.raise(r.property.start,"new.target can only be used in functions"),r}return e.callee=this.parseNoCallExpr(),this.eat(R.parenL)?(e.arguments=this.parseExprList(R.parenR),this.toReferencedList(e.arguments)):e.arguments=[],this.finishNode(e,"NewExpression")},te.parseTemplateElement=function(e){var t=this.startNode();return null===this.state.value&&(e&&this.hasPlugin("templateInvalidEscapes")?this.state.invalidTemplateEscapePosition=null:this.raise(this.state.invalidTemplateEscapePosition,"Invalid escape sequence in template")),t.value={raw:this.input.slice(this.state.start,this.state.end).replace(/\r\n?/g,"\n"),cooked:this.state.value},this.next(),t.tail=this.match(R.backQuote),this.finishNode(t,"TemplateElement")},te.parseTemplate=function(e){var t=this.startNode();this.next(),t.expressions=[];var r=this.parseTemplateElement(e);for(t.quasis=[r];!r.tail;)this.expect(R.dollarBraceL),t.expressions.push(this.parseExpression()),this.expect(R.braceR),t.quasis.push(r=this.parseTemplateElement(e));return this.next(),this.finishNode(t,"TemplateLiteral")},te.parseObj=function(e,t){var r=[],n=Object.create(null),i=!0,s=this.startNode();s.properties=[],this.next();for(var a=null;!this.eat(R.braceR);){if(i)i=!1;else if(this.expect(R.comma),this.eat(R.braceR))break;for(;this.match(R.at);)r.push(this.parseDecorator());var o=this.startNode(),u=!1,l=!1,c=void 0,f=void 0;if(r.length&&(o.decorators=r,r=[]),this.hasPlugin("objectRestSpread")&&this.match(R.ellipsis)){if(o=this.parseSpread(e?{start:0}:void 0),o.type=e?"RestProperty":"SpreadProperty",e&&this.toAssignable(o.argument,!0,"object pattern"),s.properties.push(o),!e)continue;var p=this.state.start;if(null===a){if(this.eat(R.braceR))break;if(this.match(R.comma)&&this.lookahead().type===R.braceR)continue;a=p;continue}this.unexpected(a,"Cannot have multiple rest elements when destructuring")}if(o.method=!1,o.shorthand=!1,(e||t)&&(c=this.state.start,f=this.state.startLoc),e||(u=this.eat(R.star)),!e&&this.isContextual("async")){u&&this.unexpected();var d=this.parseIdentifier();this.match(R.colon)||this.match(R.parenL)||this.match(R.braceR)||this.match(R.eq)||this.match(R.comma)?(o.key=d,o.computed=!1):(l=!0,this.hasPlugin("asyncGenerators")&&(u=this.eat(R.star)),this.parsePropertyName(o))}else this.parsePropertyName(o);this.parseObjPropValue(o,c,f,u,l,e,t),this.checkPropClash(o,n),o.shorthand&&this.addExtra(o,"shorthand",!0),s.properties.push(o)}return null!==a&&this.unexpected(a,"The rest element has to be the last element when destructuring"),r.length&&this.raise(this.state.start,"You have trailing decorators with no property"),this.finishNode(s,e?"ObjectPattern":"ObjectExpression")},te.isGetterOrSetterMethod=function(e,t){return!t&&!e.computed&&"Identifier"===e.key.type&&("get"===e.key.name||"set"===e.key.name)&&(this.match(R.string)||this.match(R.num)||this.match(R.bracketL)||this.match(R.name)||this.state.type.keyword)},te.checkGetterSetterParamCount=function(e){var t="get"===e.kind?0:1;if(e.params.length!==t){var r=e.start;"get"===e.kind?this.raise(r,"getter should have no params"):this.raise(r,"setter should have exactly one param")}},te.parseObjectMethod=function(e,t,r,n){return r||t||this.match(R.parenL)?(n&&this.unexpected(),e.kind="method",e.method=!0,this.parseMethod(e,t,r),this.finishNode(e,"ObjectMethod")):this.isGetterOrSetterMethod(e,n)?((t||r)&&this.unexpected(),e.kind=e.key.name,this.parsePropertyName(e),this.parseMethod(e),this.checkGetterSetterParamCount(e),this.finishNode(e,"ObjectMethod")):void 0},te.parseObjectProperty=function(e,t,r,n,i){return this.eat(R.colon)?(e.value=n?this.parseMaybeDefault(this.state.start,this.state.startLoc):this.parseMaybeAssign(!1,i),this.finishNode(e,"ObjectProperty")):e.computed||"Identifier"!==e.key.type?void 0:(this.checkReservedWord(e.key.name,e.key.start,!0,!0),n?e.value=this.parseMaybeDefault(t,r,e.key.__clone()):this.match(R.eq)&&i?(i.start||(i.start=this.state.start),e.value=this.parseMaybeDefault(t,r,e.key.__clone())):e.value=e.key.__clone(),e.shorthand=!0,this.finishNode(e,"ObjectProperty"))},te.parseObjPropValue=function(e,t,r,n,i,s,a){var o=this.parseObjectMethod(e,n,i,s)||this.parseObjectProperty(e,t,r,s,a);return o||this.unexpected(),o},te.parsePropertyName=function(e){if(this.eat(R.bracketL))e.computed=!0,e.key=this.parseMaybeAssign(),this.expect(R.bracketR);else{e.computed=!1;var t=this.state.inPropertyName;this.state.inPropertyName=!0,e.key=this.match(R.num)||this.match(R.string)?this.parseExprAtom():this.parseIdentifier(!0),this.state.inPropertyName=t}return e.key},te.initFunction=function(e,t){e.id=null,e.generator=!1,e.expression=!1,e.async=!!t},te.parseMethod=function(e,t,r){var n=this.state.inMethod;return this.state.inMethod=e.kind||!0,this.initFunction(e,r),this.expect(R.parenL),e.params=this.parseBindingList(R.parenR),e.generator=!!t,this.parseFunctionBody(e),this.state.inMethod=n,e},te.parseArrowExpression=function(e,t,r){return this.initFunction(e,r),e.params=this.toAssignableList(t,!0,"arrow function parameters"),this.parseFunctionBody(e,!0),this.finishNode(e,"ArrowFunctionExpression")},te.isStrictBody=function(e,t){if(!t&&e.body.directives.length)for(var r=e.body.directives,n=Array.isArray(r),i=0,r=n?r:r[Symbol.iterator]();;){var s;if(n){if(i>=r.length)break;s=r[i++]}else{if(i=r.next(),i.done)break;s=i.value}var a=s;if("use strict"===a.value.value)return!0}return!1},te.parseFunctionBody=function(e,t){var r=t&&!this.match(R.braceL),n=this.state.inAsync;if(this.state.inAsync=e.async,r)e.body=this.parseMaybeAssign(),e.expression=!0;else{var i=this.state.inFunction,s=this.state.inGenerator,a=this.state.labels;this.state.inFunction=!0,this.state.inGenerator=e.generator,this.state.labels=[],e.body=this.parseBlock(!0),e.expression=!1,this.state.inFunction=i,this.state.inGenerator=s,this.state.labels=a}this.state.inAsync=n;var o=this.isStrictBody(e,r),u=this.state.strict||t||o;if(o&&e.id&&"Identifier"===e.id.type&&"yield"===e.id.name&&this.raise(e.id.start,"Binding yield in strict mode"),u){var l=Object.create(null),c=this.state.strict;o&&(this.state.strict=!0),e.id&&this.checkLVal(e.id,!0,void 0,"function name");for(var f=e.params,p=Array.isArray(f),d=0,f=p?f:f[Symbol.iterator]();;){var h;if(p){if(d>=f.length)break;h=f[d++]}else{if(d=f.next(),d.done)break;h=d.value}var m=h;o&&"Identifier"!==m.type&&this.raise(m.start,"Non-simple parameter in strict mode"),this.checkLVal(m,!0,l,"function parameter list")}this.state.strict=c}},te.parseExprList=function(e,t,r){for(var n=[],i=!0;!this.eat(e);){if(i)i=!1;else if(this.expect(R.comma),this.eat(e))break;n.push(this.parseExprListItem(t,r))}return n},te.parseExprListItem=function(e,t,r){return e&&this.match(R.comma)?null:this.match(R.ellipsis)?this.parseSpread(t):this.parseMaybeAssign(!1,t,this.parseParenItem,r)},te.parseIdentifier=function(e){var t=this.startNode();return e||this.checkReservedWord(this.state.value,this.state.start,!!this.state.type.keyword,!1),this.match(R.name)?t.name=this.state.value:this.state.type.keyword?t.name=this.state.type.keyword:this.unexpected(),!e&&"await"===t.name&&this.state.inAsync&&this.raise(t.start,"invalid use of await inside of an async function"),t.loc.identifierName=t.name,this.next(),this.finishNode(t,"Identifier")},te.checkReservedWord=function(e,t,r,n){(this.isReservedWord(e)||r&&this.isKeyword(e))&&this.raise(t,e+" is a reserved word"),this.state.strict&&(v.strict(e)||n&&v.strictBind(e))&&this.raise(t,e+" is a reserved word in strict mode")},te.parseAwait=function(e){return this.state.inAsync||this.unexpected(),this.match(R.star)&&this.raise(e.start,"await* has been removed from the async functions proposal. Use Promise.all() instead."),e.argument=this.parseMaybeUnary(),this.finishNode(e,"AwaitExpression")},te.parseYield=function(){var e=this.startNode();return this.next(),this.match(R.semi)||this.canInsertSemicolon()||!this.match(R.star)&&!this.state.type.startsExpr?(e.delegate=!1,e.argument=null):(e.delegate=this.eat(R.star),e.argument=this.parseMaybeAssign()),this.finishNode(e,"YieldExpression")};var re=J.prototype,ne=["leadingComments","trailingComments","innerComments"],ie=function(){function e(t,r,n){w(this,e),this.type="",this.start=t,this.end=0,this.loc=new G(r),n&&(this.loc.filename=n)}return e.prototype.__clone=function(){var t=new e;for(var r in this)ne.indexOf(r)<0&&(t[r]=this[r]);return t},e}();re.startNode=function(){return new ie(this.state.start,this.state.startLoc,this.filename)},re.startNodeAt=function(e,t){return new ie(e,t,this.filename)},re.finishNode=function(e,t){return c.call(this,e,t,this.state.lastTokEnd,this.state.lastTokEndLoc)},re.finishNodeAt=function(e,t,r,n){return c.call(this,e,t,r,n)},J.prototype.raise=function(e,t){var r=u(this.input,e);t+=" ("+r.line+":"+r.column+")";var n=new SyntaxError(t);throw n.pos=e,n.loc=r,n};var se=J.prototype;se.addComment=function(e){this.filename&&(e.loc.filename=this.filename),this.state.trailingComments.push(e),this.state.leadingComments.push(e)},se.processComment=function(e){if(!("Program"===e.type&&e.body.length>0)){var t=this.state.commentStack,r=void 0,n=void 0,i=void 0,s=void 0,a=void 0;if(this.state.trailingComments.length>0)this.state.trailingComments[0].start>=e.end?(i=this.state.trailingComments,this.state.trailingComments=[]):this.state.trailingComments.length=0;else{var o=f(t);t.length>0&&o.trailingComments&&o.trailingComments[0].start>=e.end&&(i=o.trailingComments,o.trailingComments=null)}for(t.length>0&&f(t).start>=e.start&&(r=t.pop());t.length>0&&f(t).start>=e.start;)n=t.pop();if(!n&&r&&(n=r),r&&this.state.leadingComments.length>0){var u=f(this.state.leadingComments);if("ObjectProperty"===r.type){if(u.start>=e.start&&this.state.commentPreviousNode){for(a=0;a0&&(r.trailingComments=this.state.leadingComments,this.state.leadingComments=[])}}else if("CallExpression"===e.type&&e.arguments&&e.arguments.length){var l=f(e.arguments);l&&u.start>=l.start&&u.end<=e.end&&this.state.commentPreviousNode&&this.state.leadingComments.length>0&&(l.trailingComments=this.state.leadingComments,this.state.leadingComments=[])}}if(n){if(n.leadingComments)if(n!==e&&f(n.leadingComments).end<=e.start)e.leadingComments=n.leadingComments,n.leadingComments=null;else for(s=n.leadingComments.length-2;s>=0;--s)if(n.leadingComments[s].end<=e.start){e.leadingComments=n.leadingComments.splice(0,s+1);break}}else if(this.state.leadingComments.length>0)if(f(this.state.leadingComments).end<=e.start){if(this.state.commentPreviousNode)for(a=0;a0&&(e.leadingComments=this.state.leadingComments,this.state.leadingComments=[])}else{for(s=0;se.start);s++);e.leadingComments=this.state.leadingComments.slice(0,s),0===e.leadingComments.length&&(e.leadingComments=null),i=this.state.leadingComments.slice(s),0===i.length&&(i=null)}this.state.commentPreviousNode=e,i&&(i.length&&i[0].start>=e.start&&f(i).end<=e.end?e.innerComments=i:e.trailingComments=i),t.push(e)}};var ae=J.prototype;ae.estreeParseRegExpLiteral=function(e){var t=e.pattern,r=e.flags,n=null;try{n=new RegExp(t,r)}catch(e){}var i=this.estreeParseLiteral(n);return i.regex={pattern:t,flags:r},i},ae.estreeParseLiteral=function(e){return this.parseLiteral(e,"Literal")},ae.directiveToStmt=function(e){var t=e.value,r=this.startNodeAt(e.start,e.loc.start),n=this.startNodeAt(t.start,t.loc.start);return n.value=t.value,n.raw=t.extra.raw,r.expression=this.finishNodeAt(n,"Literal",t.end,t.loc.end),r.directive=t.extra.raw.slice(1,-1),this.finishNodeAt(r,"ExpressionStatement",e.end,e.loc.end)};var oe=function(e){e.extend("checkDeclaration",function(e){return function(t){p(t)?this.checkDeclaration(t.value):e.call(this,t)}}),e.extend("checkGetterSetterParamCount",function(){return function(e){var t="get"===e.kind?0:1;if(e.value.params.length!==t){var r=e.start;"get"===e.kind?this.raise(r,"getter should have no params"):this.raise(r,"setter should have exactly one param")}}}),e.extend("checkLVal",function(e){return function(t,r,n){var i=this;switch(t.type){case"ObjectPattern":t.properties.forEach(function(e){i.checkLVal("Property"===e.type?e.value:e,r,n,"object destructuring pattern")});break;default:for(var s=arguments.length,a=Array(s>3?s-3:0),o=3;o0)for(var r=e.body.body,n=Array.isArray(r),i=0,r=n?r:r[Symbol.iterator]();;){var s;if(n){if(i>=r.length)break;s=r[i++]}else{if(i=r.next(),i.done)break;s=i.value}var a=s;if("ExpressionStatement"!==a.type||"Literal"!==a.expression.type)break;if("use strict"===a.expression.value)return!0}return!1}}),e.extend("isValidDirective",function(){return function(e){return!("ExpressionStatement"!==e.type||"Literal"!==e.expression.type||"string"!=typeof e.expression.value||e.expression.extra&&e.expression.extra.parenthesized)}}),e.extend("stmtToDirective",function(e){return function(t){var r=e.call(this,t),n=t.expression.value;return r.value.value=n,r}}),e.extend("parseBlockBody",function(e){return function(t){for(var r=this,n=arguments.length,i=Array(n>1?n-1:0),s=1;s1?n-1:0),s=1;s2?n-2:0),s=2;s=a.length)break;l=a[u++]}else{if(u=a.next(),u.done)break;l=u.value}var c=l;"get"===c.kind||"set"===c.kind?this.raise(c.key.start,"Object pattern can't contain getter or setter"):c.method?this.raise(c.key.start,"Object pattern can't contain methods"):this.toAssignable(c,r,"object destructuring pattern")}return t}return e.call.apply(e,[this,t,r].concat(i))}})},ue=["any","mixed","empty","bool","boolean","number","string","void","null"],le=J.prototype;le.flowParseTypeInitialiser=function(e){var t=this.state.inType;this.state.inType=!0,this.expect(e||R.colon);var r=this.flowParseType();return this.state.inType=t,r},le.flowParsePredicate=function(){var e=this.startNode(),t=this.state.startLoc,r=this.state.start;this.expect(R.modulo);var n=this.state.startLoc;return this.expectContextual("checks"),t.line===n.line&&t.column===n.column-1||this.raise(r,"Spaces between ´%´ and ´checks´ are not allowed here."),this.eat(R.parenL)?(e.expression=this.parseExpression(),this.expect(R.parenR),this.finishNode(e,"DeclaredPredicate")):this.finishNode(e,"InferredPredicate")},le.flowParseTypeAndPredicateInitialiser=function(){var e=this.state.inType;this.state.inType=!0,this.expect(R.colon);var t=null,r=null;return this.match(R.modulo)?(this.state.inType=e,r=this.flowParsePredicate()):(t=this.flowParseType(),this.state.inType=e,this.match(R.modulo)&&(r=this.flowParsePredicate())),[t,r]},le.flowParseDeclareClass=function(e){return this.next(),this.flowParseInterfaceish(e,!0),this.finishNode(e,"DeclareClass")},le.flowParseDeclareFunction=function(e){this.next();var t=e.id=this.parseIdentifier(),r=this.startNode(),n=this.startNode();this.isRelational("<")?r.typeParameters=this.flowParseTypeParameterDeclaration():r.typeParameters=null,this.expect(R.parenL);var i=this.flowParseFunctionTypeParams();r.params=i.params,r.rest=i.rest,this.expect(R.parenR);var s=null,a=this.flowParseTypeAndPredicateInitialiser();return r.returnType=a[0],s=a[1],n.typeAnnotation=this.finishNode(r,"FunctionTypeAnnotation"),n.predicate=s,t.typeAnnotation=this.finishNode(n,"TypeAnnotation"),this.finishNode(t,t.type),this.semicolon(),this.finishNode(e,"DeclareFunction")},le.flowParseDeclare=function(e){return this.match(R._class)?this.flowParseDeclareClass(e):this.match(R._function)?this.flowParseDeclareFunction(e):this.match(R._var)?this.flowParseDeclareVariable(e):this.isContextual("module")?this.lookahead().type===R.dot?this.flowParseDeclareModuleExports(e):this.flowParseDeclareModule(e):this.isContextual("type")?this.flowParseDeclareTypeAlias(e):this.isContextual("opaque")?this.flowParseDeclareOpaqueType(e):this.isContextual("interface")?this.flowParseDeclareInterface(e):this.match(R._export)?this.flowParseDeclareExportDeclaration(e):void this.unexpected()},le.flowParseDeclareExportDeclaration=function(e){if(this.expect(R._export),this.isContextual("opaque"))return e.declaration=this.flowParseDeclare(this.startNode()),e.default=!1,this.finishNode(e,"DeclareExportDeclaration");throw this.unexpected()},le.flowParseDeclareVariable=function(e){return this.next(),e.id=this.flowParseTypeAnnotatableIdentifier(),this.semicolon(),this.finishNode(e,"DeclareVariable")},le.flowParseDeclareModule=function(e){this.next(),this.match(R.string)?e.id=this.parseExprAtom():e.id=this.parseIdentifier();var t=e.body=this.startNode(),r=t.body=[];for(this.expect(R.braceL);!this.match(R.braceR);){var n=this.startNode();if(this.match(R._import)){var i=this.lookahead();"type"!==i.value&&"typeof"!==i.value&&this.unexpected(null,"Imports within a `declare module` body must always be `import type` or `import typeof`"),this.parseImport(n)}else this.expectContextual("declare","Only declares and type imports are allowed inside declare module"),n=this.flowParseDeclare(n,!0);r.push(n)}return this.expect(R.braceR),this.finishNode(t,"BlockStatement"),this.finishNode(e,"DeclareModule")},le.flowParseDeclareModuleExports=function(e){return this.expectContextual("module"),this.expect(R.dot),this.expectContextual("exports"),e.typeAnnotation=this.flowParseTypeAnnotation(),this.semicolon(),this.finishNode(e,"DeclareModuleExports")},le.flowParseDeclareTypeAlias=function(e){return this.next(),this.flowParseTypeAlias(e),this.finishNode(e,"DeclareTypeAlias")},le.flowParseDeclareOpaqueType=function(e){return this.next(),this.flowParseOpaqueType(e,!0),this.finishNode(e,"DeclareOpaqueType")},le.flowParseDeclareInterface=function(e){return this.next(),this.flowParseInterfaceish(e),this.finishNode(e,"DeclareInterface")},le.flowParseInterfaceish=function(e){if(e.id=this.parseIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterDeclaration():e.typeParameters=null,e.extends=[],e.mixins=[],this.eat(R._extends))do{e.extends.push(this.flowParseInterfaceExtends())}while(this.eat(R.comma));if(this.isContextual("mixins")){this.next();do{e.mixins.push(this.flowParseInterfaceExtends())}while(this.eat(R.comma))}e.body=this.flowParseObjectType(!0,!1,!1)},le.flowParseInterfaceExtends=function(){var e=this.startNode();return e.id=this.flowParseQualifiedTypeIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterInstantiation():e.typeParameters=null,this.finishNode(e,"InterfaceExtends")},le.flowParseInterface=function(e){return this.flowParseInterfaceish(e,!1),this.finishNode(e,"InterfaceDeclaration")},le.flowParseRestrictedIdentifier=function(e){return ue.indexOf(this.state.value)>-1&&this.raise(this.state.start,"Cannot overwrite primitive type "+this.state.value),this.parseIdentifier(e)},le.flowParseTypeAlias=function(e){return e.id=this.flowParseRestrictedIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterDeclaration():e.typeParameters=null,e.right=this.flowParseTypeInitialiser(R.eq),this.semicolon(),this.finishNode(e,"TypeAlias")},le.flowParseOpaqueType=function(e,t){return this.expectContextual("type"),e.id=this.flowParseRestrictedIdentifier(),this.isRelational("<")?e.typeParameters=this.flowParseTypeParameterDeclaration():e.typeParameters=null,e.supertype=null,this.match(R.colon)&&(e.supertype=this.flowParseTypeInitialiser(R.colon)),e.impltype=null,t||(e.impltype=this.flowParseTypeInitialiser(R.eq)),this.semicolon(),this.finishNode(e,"OpaqueType")},le.flowParseTypeParameter=function(){var e=this.startNode(),t=this.flowParseVariance(),r=this.flowParseTypeAnnotatableIdentifier();return e.name=r.name,e.variance=t,e.bound=r.typeAnnotation,this.match(R.eq)&&(this.eat(R.eq),e.default=this.flowParseType()),this.finishNode(e,"TypeParameter")},le.flowParseTypeParameterDeclaration=function(){var e=this.state.inType,t=this.startNode();t.params=[],this.state.inType=!0,this.isRelational("<")||this.match(R.jsxTagStart)?this.next():this.unexpected();do{t.params.push(this.flowParseTypeParameter()),this.isRelational(">")||this.expect(R.comma)}while(!this.isRelational(">"));return this.expectRelational(">"),this.state.inType=e,this.finishNode(t,"TypeParameterDeclaration")},le.flowParseTypeParameterInstantiation=function(){var e=this.startNode(),t=this.state.inType;for(e.params=[],this.state.inType=!0,this.expectRelational("<");!this.isRelational(">");)e.params.push(this.flowParseType()),this.isRelational(">")||this.expect(R.comma);return this.expectRelational(">"),this.state.inType=t,this.finishNode(e,"TypeParameterInstantiation")},le.flowParseObjectPropertyKey=function(){return this.match(R.num)||this.match(R.string)?this.parseExprAtom():this.parseIdentifier(!0)},le.flowParseObjectTypeIndexer=function(e,t,r){return e.static=t,this.expect(R.bracketL),this.lookahead().type===R.colon?(e.id=this.flowParseObjectPropertyKey(),e.key=this.flowParseTypeInitialiser()):(e.id=null,e.key=this.flowParseType()),this.expect(R.bracketR),e.value=this.flowParseTypeInitialiser(),e.variance=r,this.flowObjectTypeSemicolon(),this.finishNode(e,"ObjectTypeIndexer")},le.flowParseObjectTypeMethodish=function(e){for(e.params=[],e.rest=null,e.typeParameters=null,this.isRelational("<")&&(e.typeParameters=this.flowParseTypeParameterDeclaration()),this.expect(R.parenL);!this.match(R.parenR)&&!this.match(R.ellipsis);)e.params.push(this.flowParseFunctionTypeParam()),this.match(R.parenR)||this.expect(R.comma);return this.eat(R.ellipsis)&&(e.rest=this.flowParseFunctionTypeParam()),this.expect(R.parenR),e.returnType=this.flowParseTypeInitialiser(),this.finishNode(e,"FunctionTypeAnnotation")},le.flowParseObjectTypeMethod=function(e,t,r,n){var i=this.startNodeAt(e,t);return i.value=this.flowParseObjectTypeMethodish(this.startNodeAt(e,t)),i.static=r,i.key=n,i.optional=!1,this.flowObjectTypeSemicolon(),this.finishNode(i,"ObjectTypeProperty")},le.flowParseObjectTypeCallProperty=function(e,t){var r=this.startNode();return e.static=t,e.value=this.flowParseObjectTypeMethodish(r),this.flowObjectTypeSemicolon(),this.finishNode(e,"ObjectTypeCallProperty")},le.flowParseObjectType=function(e,t,r){var n=this.state.inType;this.state.inType=!0;var i=this.startNode(),s=void 0,a=void 0,o=!1;i.callProperties=[],i.properties=[],i.indexers=[];var u=void 0,l=void 0;for(t&&this.match(R.braceBarL)?(this.expect(R.braceBarL),u=R.braceBarR,l=!0):(this.expect(R.braceL),u=R.braceR,l=!1),i.exact=l;!this.match(u);){var c=!1,f=this.state.start,p=this.state.startLoc;s=this.startNode(),e&&this.isContextual("static")&&this.lookahead().type!==R.colon&&(this.next(),o=!0);var d=this.state.start,h=this.flowParseVariance();this.match(R.bracketL)?i.indexers.push(this.flowParseObjectTypeIndexer(s,o,h)):this.match(R.parenL)||this.isRelational("<")?(h&&this.unexpected(d),i.callProperties.push(this.flowParseObjectTypeCallProperty(s,o))):this.match(R.ellipsis)?(r||this.unexpected(null,"Spread operator cannot appear in class or interface definitions"),h&&this.unexpected(h.start,"Spread properties cannot have variance"),this.expect(R.ellipsis),s.argument=this.flowParseType(),this.flowObjectTypeSemicolon(),i.properties.push(this.finishNode(s,"ObjectTypeSpreadProperty"))):(a=this.flowParseObjectPropertyKey(),this.isRelational("<")||this.match(R.parenL)?(h&&this.unexpected(h.start),i.properties.push(this.flowParseObjectTypeMethod(f,p,o,a))):(this.eat(R.question)&&(c=!0),s.key=a,s.value=this.flowParseTypeInitialiser(),s.optional=c,s.static=o,s.variance=h,this.flowObjectTypeSemicolon(),i.properties.push(this.finishNode(s,"ObjectTypeProperty")))),o=!1}this.expect(u);var m=this.finishNode(i,"ObjectTypeAnnotation");return this.state.inType=n,m},le.flowObjectTypeSemicolon=function(){this.eat(R.semi)||this.eat(R.comma)||this.match(R.braceR)||this.match(R.braceBarR)||this.unexpected()},le.flowParseQualifiedTypeIdentifier=function(e,t,r){e=e||this.state.start,t=t||this.state.startLoc;for(var n=r||this.parseIdentifier();this.eat(R.dot);){var i=this.startNodeAt(e,t);i.qualification=n,i.id=this.parseIdentifier(),n=this.finishNode(i,"QualifiedTypeIdentifier")}return n},le.flowParseGenericType=function(e,t,r){var n=this.startNodeAt(e,t);return n.typeParameters=null,n.id=this.flowParseQualifiedTypeIdentifier(e,t,r),this.isRelational("<")&&(n.typeParameters=this.flowParseTypeParameterInstantiation()),this.finishNode(n,"GenericTypeAnnotation")},le.flowParseTypeofType=function(){var e=this.startNode();return this.expect(R._typeof),e.argument=this.flowParsePrimaryType(),this.finishNode(e,"TypeofTypeAnnotation")},le.flowParseTupleType=function(){var e=this.startNode();for(e.types=[],this.expect(R.bracketL);this.state.pos0&&void 0!==arguments[0]?arguments[0]:[],t={params:e,rest:null};!this.match(R.parenR)&&!this.match(R.ellipsis);)t.params.push(this.flowParseFunctionTypeParam()),this.match(R.parenR)||this.expect(R.comma);return this.eat(R.ellipsis)&&(t.rest=this.flowParseFunctionTypeParam()),t},le.flowIdentToTypeAnnotation=function(e,t,r,n){switch(n.name){case"any":return this.finishNode(r,"AnyTypeAnnotation");case"void":return this.finishNode(r,"VoidTypeAnnotation");case"bool":case"boolean":return this.finishNode(r,"BooleanTypeAnnotation");case"mixed":return this.finishNode(r,"MixedTypeAnnotation");case"empty":return this.finishNode(r,"EmptyTypeAnnotation");case"number":return this.finishNode(r,"NumberTypeAnnotation");case"string":return this.finishNode(r,"StringTypeAnnotation");default:return this.flowParseGenericType(e,t,n)}},le.flowParsePrimaryType=function(){var e=this.state.start,t=this.state.startLoc,r=this.startNode(),n=void 0,i=void 0,s=!1,a=this.state.noAnonFunctionType;switch(this.state.type){case R.name:return this.flowIdentToTypeAnnotation(e,t,r,this.parseIdentifier());case R.braceL:return this.flowParseObjectType(!1,!1,!0);case R.braceBarL:return this.flowParseObjectType(!1,!0,!0);case R.bracketL:return this.flowParseTupleType();case R.relational:if("<"===this.state.value)return r.typeParameters=this.flowParseTypeParameterDeclaration(),this.expect(R.parenL),n=this.flowParseFunctionTypeParams(),r.params=n.params,r.rest=n.rest,this.expect(R.parenR),this.expect(R.arrow),r.returnType=this.flowParseType(),this.finishNode(r,"FunctionTypeAnnotation");break;case R.parenL:if(this.next(),!this.match(R.parenR)&&!this.match(R.ellipsis))if(this.match(R.name)){var o=this.lookahead().type;s=o!==R.question&&o!==R.colon}else s=!0;if(s){if(this.state.noAnonFunctionType=!1,i=this.flowParseType(),this.state.noAnonFunctionType=a,this.state.noAnonFunctionType||!(this.match(R.comma)||this.match(R.parenR)&&this.lookahead().type===R.arrow))return this.expect(R.parenR),i;this.eat(R.comma)}return n=i?this.flowParseFunctionTypeParams([this.reinterpretTypeAsFunctionTypeParam(i)]):this.flowParseFunctionTypeParams(),r.params=n.params,r.rest=n.rest,this.expect(R.parenR),this.expect(R.arrow),r.returnType=this.flowParseType(),r.typeParameters=null,this.finishNode(r,"FunctionTypeAnnotation");case R.string:return this.parseLiteral(this.state.value,"StringLiteralTypeAnnotation");case R._true:case R._false:return r.value=this.match(R._true),this.next(),this.finishNode(r,"BooleanLiteralTypeAnnotation");case R.plusMin:if("-"===this.state.value)return this.next(), -this.match(R.num)||this.unexpected(null,"Unexpected token, expected number"),this.parseLiteral(-this.state.value,"NumericLiteralTypeAnnotation",r.start,r.loc.start);this.unexpected();case R.num:return this.parseLiteral(this.state.value,"NumericLiteralTypeAnnotation");case R._null:return r.value=this.match(R._null),this.next(),this.finishNode(r,"NullLiteralTypeAnnotation");case R._this:return r.value=this.match(R._this),this.next(),this.finishNode(r,"ThisTypeAnnotation");case R.star:return this.next(),this.finishNode(r,"ExistentialTypeParam");default:if("typeof"===this.state.type.keyword)return this.flowParseTypeofType()}this.unexpected()},le.flowParsePostfixType=function(){for(var e=this.state.start,t=this.state.startLoc,r=this.flowParsePrimaryType();!this.canInsertSemicolon()&&this.match(R.bracketL);){var n=this.startNodeAt(e,t);n.elementType=r,this.expect(R.bracketL),this.expect(R.bracketR),r=this.finishNode(n,"ArrayTypeAnnotation")}return r},le.flowParsePrefixType=function(){var e=this.startNode();return this.eat(R.question)?(e.typeAnnotation=this.flowParsePrefixType(),this.finishNode(e,"NullableTypeAnnotation")):this.flowParsePostfixType()},le.flowParseAnonFunctionWithoutParens=function(){var e=this.flowParsePrefixType();if(!this.state.noAnonFunctionType&&this.eat(R.arrow)){var t=this.startNodeAt(e.start,e.loc.start);return t.params=[this.reinterpretTypeAsFunctionTypeParam(e)],t.rest=null,t.returnType=this.flowParseType(),t.typeParameters=null,this.finishNode(t,"FunctionTypeAnnotation")}return e},le.flowParseIntersectionType=function(){var e=this.startNode();this.eat(R.bitwiseAND);var t=this.flowParseAnonFunctionWithoutParens();for(e.types=[t];this.eat(R.bitwiseAND);)e.types.push(this.flowParseAnonFunctionWithoutParens());return 1===e.types.length?t:this.finishNode(e,"IntersectionTypeAnnotation")},le.flowParseUnionType=function(){var e=this.startNode();this.eat(R.bitwiseOR);var t=this.flowParseIntersectionType();for(e.types=[t];this.eat(R.bitwiseOR);)e.types.push(this.flowParseIntersectionType());return 1===e.types.length?t:this.finishNode(e,"UnionTypeAnnotation")},le.flowParseType=function(){var e=this.state.inType;this.state.inType=!0;var t=this.flowParseUnionType();return this.state.inType=e,t},le.flowParseTypeAnnotation=function(){var e=this.startNode();return e.typeAnnotation=this.flowParseTypeInitialiser(),this.finishNode(e,"TypeAnnotation")},le.flowParseTypeAndPredicateAnnotation=function(){var e=this.startNode(),t=this.flowParseTypeAndPredicateInitialiser();return e.typeAnnotation=t[0],e.predicate=t[1],this.finishNode(e,"TypeAnnotation")},le.flowParseTypeAnnotatableIdentifier=function(){var e=this.flowParseRestrictedIdentifier();return this.match(R.colon)&&(e.typeAnnotation=this.flowParseTypeAnnotation(),this.finishNode(e,e.type)),e},le.typeCastToParameter=function(e){return e.expression.typeAnnotation=e.typeAnnotation,this.finishNodeAt(e.expression,e.expression.type,e.typeAnnotation.end,e.typeAnnotation.loc.end)},le.flowParseVariance=function(){var e=null;return this.match(R.plusMin)&&("+"===this.state.value?e="plus":"-"===this.state.value&&(e="minus"),this.next()),e};var ce=function(e){e.extend("parseFunctionBody",function(e){return function(t,r){return this.match(R.colon)&&!r&&(t.returnType=this.flowParseTypeAndPredicateAnnotation()),e.call(this,t,r)}}),e.extend("parseStatement",function(e){return function(t,r){if(this.state.strict&&this.match(R.name)&&"interface"===this.state.value){var n=this.startNode();return this.next(),this.flowParseInterface(n)}return e.call(this,t,r)}}),e.extend("parseExpressionStatement",function(e){return function(t,r){if("Identifier"===r.type)if("declare"===r.name){if(this.match(R._class)||this.match(R.name)||this.match(R._function)||this.match(R._var)||this.match(R._export))return this.flowParseDeclare(t)}else if(this.match(R.name)){if("interface"===r.name)return this.flowParseInterface(t);if("type"===r.name)return this.flowParseTypeAlias(t);if("opaque"===r.name)return this.flowParseOpaqueType(t,!1)}return e.call(this,t,r)}}),e.extend("shouldParseExportDeclaration",function(e){return function(){return this.isContextual("type")||this.isContextual("interface")||this.isContextual("opaque")||e.call(this)}}),e.extend("isExportDefaultSpecifier",function(e){return function(){return(!this.match(R.name)||"type"!==this.state.value&&"interface"!==this.state.value&&"opaque"!==this.state.value)&&e.call(this)}}),e.extend("parseConditional",function(e){return function(t,r,n,i,s){if(s&&this.match(R.question)){var a=this.state.clone();try{return e.call(this,t,r,n,i)}catch(e){if(e instanceof SyntaxError)return this.state=a,s.start=e.pos||this.state.start,t;throw e}}return e.call(this,t,r,n,i)}}),e.extend("parseParenItem",function(e){return function(t,r,n){if(t=e.call(this,t,r,n),this.eat(R.question)&&(t.optional=!0),this.match(R.colon)){var i=this.startNodeAt(r,n);return i.expression=t,i.typeAnnotation=this.flowParseTypeAnnotation(),this.finishNode(i,"TypeCastExpression")}return t}}),e.extend("parseExport",function(e){return function(t){return t=e.call(this,t),"ExportNamedDeclaration"===t.type&&(t.exportKind=t.exportKind||"value"),t}}),e.extend("parseExportDeclaration",function(e){return function(t){if(this.isContextual("type")){t.exportKind="type";var r=this.startNode();return this.next(),this.match(R.braceL)?(t.specifiers=this.parseExportSpecifiers(),this.parseExportFrom(t),null):this.flowParseTypeAlias(r)}if(this.isContextual("opaque")){t.exportKind="type";var n=this.startNode();return this.next(),this.flowParseOpaqueType(n,!1)}if(this.isContextual("interface")){t.exportKind="type";var i=this.startNode();return this.next(),this.flowParseInterface(i)}return e.call(this,t)}}),e.extend("parseClassId",function(e){return function(t){e.apply(this,arguments),this.isRelational("<")&&(t.typeParameters=this.flowParseTypeParameterDeclaration())}}),e.extend("isKeyword",function(e){return function(t){return(!this.state.inType||"void"!==t)&&e.call(this,t)}}),e.extend("readToken",function(e){return function(t){return!this.state.inType||62!==t&&60!==t?e.call(this,t):this.finishOp(R.relational,1)}}),e.extend("jsx_readToken",function(e){return function(){if(!this.state.inType)return e.call(this)}}),e.extend("toAssignable",function(e){return function(t,r,n){return"TypeCastExpression"===t.type?e.call(this,this.typeCastToParameter(t),r,n):e.call(this,t,r,n)}}),e.extend("toAssignableList",function(e){return function(t,r,n){for(var i=0;i2?n-2:0),s=2;s1114111||de(a)!=a)throw RangeError("Invalid code point: "+a);a<=65535?e.push(a):(a-=65536,t=55296+(a>>10),r=a%1024+56320,e.push(t,r)),(n+1==i||e.length>16384)&&(s+=pe.apply(null,e),e.length=0)}return s}}var he=fe,me={quot:'"',amp:"&",apos:"'",lt:"<",gt:">",nbsp:" ",iexcl:"¡",cent:"¢",pound:"£",curren:"¤",yen:"¥",brvbar:"¦",sect:"§",uml:"¨",copy:"©",ordf:"ª",laquo:"«",not:"¬",shy:"­",reg:"®",macr:"¯",deg:"°",plusmn:"±",sup2:"²",sup3:"³",acute:"´",micro:"µ",para:"¶",middot:"·",cedil:"¸",sup1:"¹",ordm:"º",raquo:"»",frac14:"¼",frac12:"½",frac34:"¾",iquest:"¿",Agrave:"À",Aacute:"Á",Acirc:"Â",Atilde:"Ã",Auml:"Ä",Aring:"Å",AElig:"Æ",Ccedil:"Ç",Egrave:"È",Eacute:"É",Ecirc:"Ê",Euml:"Ë",Igrave:"Ì",Iacute:"Í",Icirc:"Î",Iuml:"Ï",ETH:"Ð",Ntilde:"Ñ",Ograve:"Ò",Oacute:"Ó",Ocirc:"Ô",Otilde:"Õ",Ouml:"Ö",times:"×",Oslash:"Ø",Ugrave:"Ù",Uacute:"Ú",Ucirc:"Û",Uuml:"Ü",Yacute:"Ý",THORN:"Þ",szlig:"ß",agrave:"à",aacute:"á",acirc:"â",atilde:"ã",auml:"ä",aring:"å",aelig:"æ",ccedil:"ç",egrave:"è",eacute:"é",ecirc:"ê",euml:"ë",igrave:"ì",iacute:"í",icirc:"î",iuml:"ï",eth:"ð",ntilde:"ñ",ograve:"ò",oacute:"ó",ocirc:"ô",otilde:"õ",ouml:"ö",divide:"÷",oslash:"ø",ugrave:"ù",uacute:"ú",ucirc:"û",uuml:"ü",yacute:"ý",thorn:"þ",yuml:"ÿ",OElig:"Œ",oelig:"œ",Scaron:"Š",scaron:"š",Yuml:"Ÿ",fnof:"ƒ",circ:"ˆ",tilde:"˜",Alpha:"Α",Beta:"Β",Gamma:"Γ",Delta:"Δ",Epsilon:"Ε",Zeta:"Ζ",Eta:"Η",Theta:"Θ",Iota:"Ι",Kappa:"Κ",Lambda:"Λ",Mu:"Μ",Nu:"Ν",Xi:"Ξ",Omicron:"Ο",Pi:"Π",Rho:"Ρ",Sigma:"Σ",Tau:"Τ",Upsilon:"Υ",Phi:"Φ",Chi:"Χ",Psi:"Ψ",Omega:"Ω",alpha:"α",beta:"β",gamma:"γ",delta:"δ",epsilon:"ε",zeta:"ζ",eta:"η",theta:"θ",iota:"ι",kappa:"κ",lambda:"λ",mu:"μ",nu:"ν",xi:"ξ",omicron:"ο",pi:"π",rho:"ρ",sigmaf:"ς",sigma:"σ",tau:"τ",upsilon:"υ",phi:"φ",chi:"χ",psi:"ψ",omega:"ω",thetasym:"ϑ",upsih:"ϒ",piv:"ϖ",ensp:" ",emsp:" ",thinsp:" ",zwnj:"‌",zwj:"‍",lrm:"‎",rlm:"‏",ndash:"–",mdash:"—",lsquo:"‘",rsquo:"’",sbquo:"‚",ldquo:"“",rdquo:"”",bdquo:"„",dagger:"†",Dagger:"‡",bull:"•",hellip:"…",permil:"‰",prime:"′",Prime:"″",lsaquo:"‹",rsaquo:"›",oline:"‾",frasl:"⁄",euro:"€",image:"ℑ",weierp:"℘",real:"ℜ",trade:"™",alefsym:"ℵ",larr:"←",uarr:"↑",rarr:"→",darr:"↓",harr:"↔",crarr:"↵",lArr:"⇐",uArr:"⇑",rArr:"⇒",dArr:"⇓",hArr:"⇔",forall:"∀",part:"∂",exist:"∃",empty:"∅",nabla:"∇",isin:"∈",notin:"∉",ni:"∋",prod:"∏",sum:"∑",minus:"−",lowast:"∗",radic:"√",prop:"∝",infin:"∞",ang:"∠",and:"∧",or:"∨",cap:"∩",cup:"∪",int:"∫",there4:"∴",sim:"∼",cong:"≅",asymp:"≈",ne:"≠",equiv:"≡",le:"≤",ge:"≥",sub:"⊂",sup:"⊃",nsub:"⊄",sube:"⊆",supe:"⊇",oplus:"⊕",otimes:"⊗",perp:"⊥",sdot:"⋅",lceil:"⌈",rceil:"⌉",lfloor:"⌊",rfloor:"⌋",lang:"〈",rang:"〉",loz:"◊",spades:"♠",clubs:"♣",hearts:"♥",diams:"♦"},ye=/^[\da-fA-F]+$/,ve=/^\d+$/;U.j_oTag=new j("...",!0,!0),R.jsxName=new T("jsxName"),R.jsxText=new T("jsxText",{beforeExpr:!0}),R.jsxTagStart=new T("jsxTagStart",{startsExpr:!0}),R.jsxTagEnd=new T("jsxTagEnd"),R.jsxTagStart.updateContext=function(){this.state.context.push(U.j_expr),this.state.context.push(U.j_oTag),this.state.exprAllowed=!1},R.jsxTagEnd.updateContext=function(e){var t=this.state.context.pop();t===U.j_oTag&&e===R.slash||t===U.j_cTag?(this.state.context.pop(),this.state.exprAllowed=this.curContext()===U.j_expr):this.state.exprAllowed=!0};var ge=J.prototype;ge.jsxReadToken=function(){for(var e="",t=this.state.pos;;){this.state.pos>=this.input.length&&this.raise(this.state.start,"Unterminated JSX contents");var r=this.input.charCodeAt(this.state.pos);switch(r){case 60:case 123:return this.state.pos===this.state.start?60===r&&this.state.exprAllowed?(++this.state.pos,this.finishToken(R.jsxTagStart)):this.getTokenFromCode(r):(e+=this.input.slice(t,this.state.pos),this.finishToken(R.jsxText,e));case 38:e+=this.input.slice(t,this.state.pos),e+=this.jsxReadEntity(),t=this.state.pos;break;default:o(r)?(e+=this.input.slice(t,this.state.pos),e+=this.jsxReadNewLine(!0),t=this.state.pos):++this.state.pos}}},ge.jsxReadNewLine=function(e){var t=this.input.charCodeAt(this.state.pos),r=void 0;return++this.state.pos,13===t&&10===this.input.charCodeAt(this.state.pos)?(++this.state.pos,r=e?"\n":"\r\n"):r=String.fromCharCode(t),++this.state.curLine,this.state.lineStart=this.state.pos,r},ge.jsxReadString=function(e){for(var t="",r=++this.state.pos;;){this.state.pos>=this.input.length&&this.raise(this.state.start,"Unterminated string constant");var n=this.input.charCodeAt(this.state.pos);if(n===e)break;38===n?(t+=this.input.slice(r,this.state.pos),t+=this.jsxReadEntity(),r=this.state.pos):o(n)?(t+=this.input.slice(r,this.state.pos),t+=this.jsxReadNewLine(!1),r=this.state.pos):++this.state.pos}return t+=this.input.slice(r,this.state.pos++),this.finishToken(R.string,t)},ge.jsxReadEntity=function(){for(var e="",t=0,r=void 0,n=this.input[this.state.pos],i=++this.state.pos;this.state.pos")}return r.openingElement=i,r.closingElement=s,r.children=n,this.match(R.relational)&&"<"===this.state.value&&this.raise(this.state.start,"Adjacent JSX elements must be wrapped in an enclosing tag"),this.finishNode(r,"JSXElement")},ge.jsxParseElement=function(){var e=this.state.start,t=this.state.startLoc;return this.next(),this.jsxParseElementAt(e,t)};var be=function(e){e.extend("parseExprAtom",function(e){return function(t){if(this.match(R.jsxText)){var r=this.parseLiteral(this.state.value,"JSXText");return r.extra=null,r}return this.match(R.jsxTagStart)?this.jsxParseElement():e.call(this,t)}}),e.extend("readToken",function(e){return function(t){if(this.state.inPropertyName)return e.call(this,t);var r=this.curContext();if(r===U.j_expr)return this.jsxReadToken();if(r===U.j_oTag||r===U.j_cTag){if(i(t))return this.jsxReadWord();if(62===t)return++this.state.pos,this.finishToken(R.jsxTagEnd);if((34===t||39===t)&&r===U.j_oTag)return this.jsxReadString(t)}return 60===t&&this.state.exprAllowed?(++this.state.pos,this.finishToken(R.jsxTagStart)):e.call(this,t)}}),e.extend("updateContext",function(e){return function(t){if(this.match(R.braceL)){var r=this.curContext();r===U.j_oTag?this.state.context.push(U.braceExpression):r===U.j_expr?this.state.context.push(U.templateQuasi):e.call(this,t),this.state.exprAllowed=!0}else{if(!this.match(R.slash)||t!==R.jsxTagStart)return e.call(this,t);this.state.context.length-=2,this.state.context.push(U.j_cTag),this.state.exprAllowed=!1}}})};K.estree=oe,K.flow=ce,K.jsx=be,t.parse=h,t.parseExpression=m,t.tokTypes=R},function(e,t,r){"use strict";var n=r(21),i=r(431),s=r(141),a=r(150)("IE_PROTO"),o=function(){},u=function(){var e,t=r(230)("iframe"),n=s.length;for(t.style.display="none",r(426).appendChild(t),t.src="javascript:",e=t.contentWindow.document,e.open(),e.write("