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Tsifier.js
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Tsifier.js
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'use strict';
var convert = require('convert-source-map');
var events = require('events');
var extend = require('util')._extend;
var fs = require('fs');
var realpath = require('fs.realpath');
var log = require('util').debuglog(require('../package').name);
var trace = require('util').debuglog(require('../package').name + '-trace');
var path = require('path');
var through = require('through2');
var time = require('./time');
var tsconfig = require('tsconfig');
var util = require('util');
var assign = require('object-assign');
module.exports = function (ts) {
var CompileError = require('./CompileError')(ts);
var Host = require('./Host')(ts);
var currentDirectory = ts.normalizeSlashes(realpath.realpathSync(process.cwd()));
var parseJsonConfigFileContent = ts.parseJsonConfigFileContent || ts.parseConfigFile;
function isTypescript(file) {
return (/\.tsx?$/i).test(file);
}
function isTsx(file) {
return (/\.tsx$/i).test(file);
}
function isJavascript(file) {
return (/\.jsx?$/i).test(file);
}
function isTypescriptDeclaration(file) {
return (/\.d\.ts$/i).test(file);
}
function replaceFileExtension(file, extension) {
return file.replace(/\.\w+$/i, extension);
}
function fileExists(file) {
try {
var stats = fs.lstatSync(file);
return stats.isFile();
} catch (e) {
return false;
}
}
function parseOptions(opts, bopts) {
// Expand any short-name, command-line options
var expanded = {};
if (opts.m) { expanded.module = opts.m; }
if (opts.p) { expanded.project = opts.p; }
if (opts.t) { expanded.target = opts.t; }
opts = assign(expanded, opts);
var config;
var configFile;
if (typeof opts.project === "object"){
log('Using inline tsconfig');
config = JSON.parse(JSON.stringify(opts.project));
config.compilerOptions = config.compilerOptions || {};
extend(config.compilerOptions, opts);
} else {
if (fileExists(opts.project)) {
configFile = opts.project;
} else {
configFile = ts.findConfigFile(
ts.normalizeSlashes(opts.project || bopts.basedir || currentDirectory),
fileExists
);
}
if (configFile) {
log('Using tsconfig file at %s', configFile);
config = tsconfig.readFileSync(configFile);
config.compilerOptions = config.compilerOptions || {};
extend(config.compilerOptions, opts);
} else {
config = {
files: [],
compilerOptions: opts
};
}
}
// Note that subarg parses command line arrays in its own peculiar way:
// https://github.com/substack/subarg
if (opts.exclude) {
config.exclude = opts.exclude._ || opts.exclude;
}
if (opts.files) {
config.files = opts.files._ || opts.files;
}
if (opts.include) {
config.include = opts.include._ || opts.include;
}
var parsed = parseJsonConfigFileContent(
config,
ts.sys,
configFile ? ts.normalizeSlashes(path.resolve(path.dirname(configFile))) : currentDirectory,
null,
configFile ? ts.normalizeSlashes(path.resolve(configFile)) : undefined
);
// Generate inline sourcemaps if Browserify's --debug option is set
parsed.options.sourceMap = false;
parsed.options.inlineSourceMap = bopts.debug;
parsed.options.inlineSources = bopts.debug;
// Default to CommonJS module mode
parsed.options.module = parsed.options.module || ts.ModuleKind.CommonJS;
// Blacklist --out/--outFile/--noEmit; these should definitely not be set, since we are doing
// concatenation with Browserify instead
delete parsed.options.out;
delete parsed.options.outFile;
delete parsed.options.noEmit;
// Set rootDir and outDir so we know exactly where the TS compiler will be trying to
// write files; the filenames will end up being the keys into our in-memory store.
// The output directory needs to be distinct from the input directory to prevent the TS
// compiler from thinking that it might accidentally overwrite source files, which would
// prevent it from outputting e.g. the results of transpiling ES6 JS files with --allowJs.
parsed.options.rootDir = path.relative('.', '/');
parsed.options.outDir = ts.normalizeSlashes(path.resolve('/__tsify__'));
log('Files from tsconfig parse:');
parsed.fileNames.forEach(function (filename) { log(' %s', filename); });
var result = {
options: parsed.options,
fileNames: parsed.fileNames
};
return result;
}
function Tsifier(opts, bopts) {
var self = this;
var parsedOptions = parseOptions(opts, bopts);
self.opts = parsedOptions.options;
self.files = parsedOptions.fileNames;
self.ignoredFiles = [];
self.bopts = bopts;
self.host = new Host(currentDirectory, self.opts);
self.host.on('file', function (file, id) {
self.emit('file', file, id);
});
}
util.inherits(Tsifier, events.EventEmitter);
Tsifier.prototype.reset = function () {
var self = this;
self.ignoredFiles = [];
self.host._reset();
self.addFiles(self.files);
};
Tsifier.prototype.generateCache = function (files, ignoredFiles) {
if (ignoredFiles) {
this.ignoredFiles = ignoredFiles;
}
this.addFiles(files);
this.compile();
};
Tsifier.prototype.addFiles = function (files) {
var self = this;
files.forEach(function (file) {
self.host._addFile(file, true);
});
};
Tsifier.prototype.compile = function () {
var self = this;
var createProgram_t0 = time.start();
var program = self.host._compile(self.opts);
time.stop(createProgram_t0, 'createProgram');
var syntaxDiagnostics = self.checkSyntax(program);
if (syntaxDiagnostics.length) {
log('Compilation encountered fatal syntax errors');
return;
}
var semanticDiagnostics = self.checkSemantics(program);
if (semanticDiagnostics.length && self.opts.noEmitOnError) {
log('Compilation encountered fatal semantic errors');
return;
}
var emit_t0 = time.start();
var emitOutput = program.emit();
time.stop(emit_t0, 'emit program');
var emittedDiagnostics = self.checkEmittedOutput(emitOutput);
if (emittedDiagnostics.length && self.opts.noEmitOnError) {
log('Compilation encountered fatal errors during emit');
return;
}
log('Compilation completed without errors');
};
Tsifier.prototype.checkSyntax = function (program) {
var self = this;
var syntaxCheck_t0 = time.start();
var syntaxDiagnostics = program.getSyntacticDiagnostics();
time.stop(syntaxCheck_t0, 'syntax checking');
syntaxDiagnostics.forEach(function (error) {
self.emit('error', new CompileError(error));
});
if (syntaxDiagnostics.length) {
self.host.error = true;
}
return syntaxDiagnostics;
};
Tsifier.prototype.checkSemantics = function (program) {
var self = this;
var semanticDiagnostics_t0 = time.start();
var semanticDiagnostics = program.getGlobalDiagnostics();
if (semanticDiagnostics.length === 0) {
semanticDiagnostics = program.getSemanticDiagnostics();
}
time.stop(semanticDiagnostics_t0, 'semantic checking');
semanticDiagnostics.forEach(function (error) {
self.emit('error', new CompileError(error));
});
if (semanticDiagnostics.length && self.opts.noEmitOnError) {
self.host.error = true;
}
return semanticDiagnostics;
};
Tsifier.prototype.checkEmittedOutput = function (emitOutput) {
var self = this;
var emittedDiagnostics = emitOutput.diagnostics;
emittedDiagnostics.forEach(function (error) {
self.emit('error', new CompileError(error));
});
if (emittedDiagnostics.length && self.opts.noEmitOnError) {
self.host.error = true;
}
return emittedDiagnostics;
};
Tsifier.prototype.transform = function (file) {
var self = this;
trace('Transforming %s', file);
if (self.ignoredFiles.indexOf(file) !== -1) {
return through();
}
if (isTypescriptDeclaration(file)) {
return through(transform);
}
if (isTypescript(file) || (isJavascript(file) && self.opts.allowJs)) {
return through(transform, flush);
}
return through();
function transform(chunk, enc, next) {
next();
}
function flush(next) {
if (self.host.error) {
next();
return;
}
var compiled = self.getCompiledFile(file);
if (compiled) {
this.push(compiled);
}
this.push(null);
next();
}
};
Tsifier.prototype.getCompiledFile = function (inputFile, alreadyMissedCache) {
var self = this;
var outputExtension = (ts.JsxEmit && self.opts.jsx === ts.JsxEmit.Preserve && isTsx(inputFile)) ? '.jsx' : '.js';
var output = self.host._output(replaceFileExtension(inputFile, outputExtension));
if (output === undefined) {
if (alreadyMissedCache) {
self.emit('error', new Error('tsify: no compiled file for ' + inputFile));
return;
}
self.generateCache([inputFile]);
if (self.host.error)
return;
return self.getCompiledFile(inputFile, true);
}
if (self.opts.inlineSourceMap) {
output = self.setSourcePathInSourcemap(output, inputFile);
}
return output;
};
Tsifier.prototype.setSourcePathInSourcemap = function (output, inputFile) {
var self = this;
var normalized = ts.normalizePath(path.relative(
self.bopts.basedir || currentDirectory,
inputFile
));
var sourcemap = convert.fromComment(output);
sourcemap.setProperty('sources', [normalized]);
return output.replace(convert.commentRegex, sourcemap.toComment());
}
var result = Tsifier;
result.isTypescript = isTypescript;
result.isTypescriptDeclaration = isTypescriptDeclaration;
return result;
};