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Methods","number":"D.6"},{"type":"clause","id":"sec-host-layering-points","aoid":null,"title":"Host Layering Points","titleHTML":"Host Layering Points","number":"D"},{"type":"clause","id":"sec-corrections-and-clarifications-in-ecmascript-2015-with-possible-compatibility-impact","aoid":null,"title":"Corrections and Clarifications in ECMAScript 2015 with Possible Compatibility Impact","titleHTML":"Corrections and Clarifications in ECMAScript 2015 with Possible Compatibility Impact","number":"E"},{"type":"clause","id":"sec-additions-and-changes-that-introduce-incompatibilities-with-prior-editions","aoid":null,"title":"Additions and Changes That Introduce Incompatibilities with Prior Editions","titleHTML":"Additions and Changes That Introduce Incompatibilities with Prior Editions","number":"F"},{"type":"clause","id":"sec-colophon","aoid":null,"title":"Colophon","titleHTML":"Colophon","number":"G"},{"type":"term","term":"IEEE 754-2019","refId":"sec-bibliography"},{"type":"clause","id":"sec-bibliography","aoid":null,"title":"Bibliography","titleHTML":"Bibliography","number":"H"},{"type":"clause","id":"sec-copyright-and-software-license","aoid":null,"title":"Copyright & Software License","titleHTML":"Copyright & Software License","number":"I"}]} \ No newline at end of file diff --git a/index.html b/index.html index af0d19d..d18b373 100644 --- a/index.html +++ b/index.html @@ -2525,7 +2525,7 @@

Stage 1 Draft / March 22, 2023

Module Source Imports

+

Stage 1 Draft / May 1, 2023

Module Source Imports

13 ECMAScript Language: Expressions

@@ -2537,36 +2537,36 @@

13.3.10 Import Calls

13.3.10.1 Runtime Semantics: Evaluation

- ImportCall : + ImportCall : import ( - AssignmentExpression + AssignmentExpression ) -
  1. Let referrer be GetActiveScriptOrModule().
  2. If referrer is null, set referrer to the current Realm Record.
  3. Let argRef be ? Evaluation of AssignmentExpression.
  4. Let specifier be ? GetValue(argRef).
  5. Let promiseCapability be ! NewPromiseCapability(%Promise%).
  6. Let specifierString be Completion(ToString(specifier)).
  7. IfAbruptRejectPromise(specifierString, promiseCapability).
  8. Perform HostLoadImportedModule(referrer, specifierString, empty, promiseCapability).
  9. Return promiseCapability.[[Promise]].
  10. Let specifierRef be the result of evaluating AssignmentExpression.
  11. Let specifier be ? GetValue(specifierRef).
  12. Return EvaluateImportCall(specifier, undefined).
 +
  1. Let referrer be GetActiveScriptOrModule().
  2. If referrer is null, set referrer to the current Realm Record.
  3. Let argRef be ? Evaluation of AssignmentExpression.
  4. Let specifier be ? GetValue(argRef).
  5. Let promiseCapability be ! NewPromiseCapability(%Promise%).
  6. Let specifierString be Completion(ToString(specifier)).
  7. IfAbruptRejectPromise(specifierString, promiseCapability).
  8. Perform HostLoadImportedModule(referrer, specifierString, empty, promiseCapability).
  9. Return promiseCapability.[[Promise]].
  10. Let specifierRef be the result of evaluating AssignmentExpression.
  11. Let specifier be ? GetValue(specifierRef).
  12. Return EvaluateImportCall(specifier, undefined).
 - ImportCall : + ImportCall : import ( - AssignmentExpression + AssignmentExpression , - AssignmentExpression + AssignmentExpression ) -
  1. Let specifierRef be the result of evaluating the first AssignmentExpression.
  2. Let specifier be ? GetValue(specifierRef).
  3. Let optionsRef be the result of evaluating the second AssignmentExpression.
  4. Let options be ? GetValue(optionsRef).
  5. Return EvaluateImportCall(specifier, options).
 +
  1. Let specifierRef be the result of evaluating the first AssignmentExpression.
  2. Let specifier be ? GetValue(specifierRef).
  3. Let optionsRef be the result of evaluating the second AssignmentExpression.
  4. Let options be ? GetValue(optionsRef).
  5. Return EvaluateImportCall(specifier, options).

13.3.10.1.1 EvaluateImportCall ( specifier, options )

The abstract operation EvaluateImportCall takes arguments specifier and options. It performs the following steps when called:

-
  1. Let referrer be GetActiveScriptOrModule().
  2. If referrer is null, set referrer to the current Realm Record.
  3. Let promiseCapability be ! NewPromiseCapability(%Promise%).
  4. Let specifierString be Completion(ToString(specifier)).
  5. IfAbruptRejectPromise(specifierString, promiseCapability).
  6. Let sourcePhase be false.
  7. If options is not undefined, then
    1. If Type(options) is not Object,
      1. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
      2. Return promiseCapability.[[Promise]].
    2. Let phaseOption be Get(options, "phase").
    3. IfAbruptRejectPromise(phaseOption, promiseCapability).
    4. If phaseOption is not undefined,
      1. If Type(phaseOption) is not "source", then
        1. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
        2. Return promiseCapability.[[Promise]].
      2. Set sourcePhase to true.
  8. Let state be the DynamicImportState Record { [[PromiseCapability]]: promiseCapability, [[SourcePhase]]: sourcePhase }.
  9. Perform HostLoadImportedModule(referrer, specifierString, empty, state).
  10. Return promiseCapability.[[Promise]].
 +
  1. Let referrer be GetActiveScriptOrModule().
  2. If referrer is null, set referrer to the current Realm Record.
  3. Let promiseCapability be ! NewPromiseCapability(%Promise%).
  4. Let specifierString be Completion(ToString(specifier)).
  5. IfAbruptRejectPromise(specifierString, promiseCapability).
  6. Let sourcePhase be false.
  7. If options is not undefined, then
    1. If Type(options) is not Object,
      1. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
      2. Return promiseCapability.[[Promise]].
    2. Let phaseOption be Get(options, "phase").
    3. IfAbruptRejectPromise(phaseOption, promiseCapability).
    4. If phaseOption is not undefined,
      1. If Type(phaseOption) is not "source", then
        1. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
        2. Return promiseCapability.[[Promise]].
      2. Set sourcePhase to true.
  8. Let state be the DynamicImportState Record { [[PromiseCapability]]: promiseCapability, [[SourcePhase]]: sourcePhase }.
  9. Perform HostLoadImportedModule(referrer, specifierString, empty, state).
  10. Return promiseCapability.[[Promise]].
 -

A DynamicImportState Record is a Record that contains information about the loading process of a module graph. It's used to continue loading after a call to HostLoadImportedModule. Each DynamicImportState Record has the fields defined in Table 1:

+

A DynamicImportState Record is a Record that contains information about the loading process of a module graph. It's used to continue loading after a call to HostLoadImportedModule. Each DynamicImportState Record has the fields defined in Table 1:

Table 1: DynamicImportState Record Fields
@@ -2585,7 +2585,7 @@

13.3.10.1.1 EvaluateImportCall ( speci [[PromiseCapability]]

- a PromiseCapability Record + a PromiseCapability Record The promise to resolve when the dynamic import finishes. @@ -2607,8 +2607,8 @@

13.3.10.1.1 EvaluateImportCall ( speci

13.3.10.1.2 ContinueDynamicImport ( promiseCapability, state, moduleCompletion )

-

The abstract operation ContinueDynamicImport takes arguments promiseCapability (a PromiseCapability Record), state (a DynamicImportState Record), and moduleCompletion (either a normal completion containing a Module Record or a throw completion) and returns unused. It completes the process of a dynamic import originally started by an import() call, resolving or rejecting the promise returned by that call as appropriate. It performs the following steps when called:

-
  1. Let promiseCapability be state.[[PromiseCapability]].
  2. If moduleCompletion is an abrupt completion, then
    1. Perform ! Call(promiseCapability.[[Reject]], undefined, « moduleCompletion.[[Value]] »).
    2. Return unused.
  3. Let module be moduleCompletion.[[Value]].
  4. If state.[[SourcePhase]] is true, then
    1. Let moduleSourceObject be module.[[ModuleSourceObject]].
    2. If moduleSourceObject is null, then
      1. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
      2. Return unused.
    3. Perform ! Call(promiseCapability.[[Resolve]], undefined, « moduleSourceObject »).
    4. Return unused.
  5. Let loadPromise be module.LoadRequestedModules().
  6. Let rejectedClosure be a new Abstract Closure with parameters (reason) that captures promiseCapability and performs the following steps when called:
    1. Perform ! Call(promiseCapability.[[Reject]], undefined, « reason »).
    2. Return unused.
  7. Let onRejected be CreateBuiltinFunction(rejectedClosure, 1, "", « »).
  8. Let linkAndEvaluateClosure be a new Abstract Closure with no parameters that captures module, promiseCapability, and onRejected and performs the following steps when called:
    1. Let link be Completion(module.Link()).
    2. If link is an abrupt completion, then
      1. Perform ! Call(promiseCapability.[[Reject]], undefined, « link.[[Value]] »).
      2. Return unused.
    3. Let evaluatePromise be module.Evaluate().
    4. Let fulfilledClosure be a new Abstract Closure with no parameters that captures module and promiseCapability and performs the following steps when called:
      1. Let namespace be GetModuleNamespace(module).
      2. Perform ! Call(promiseCapability.[[Resolve]], undefined, « namespace »).
      3. Return unused.
    5. Let onFulfilled be CreateBuiltinFunction(fulfilledClosure, "", 0, « »).
    6. Perform PerformPromiseThen(evaluatePromise, onFulfilled, onRejected).
  9. Let linkAndEvaluate be CreateBuiltinFunction(linkAndEvaluateClosure, "", 0, « »).
  10. Perform PerformPromiseThen(loadPromise, linkAndEvaluate, onRejected).
  11. Return unused.
 +

The abstract operation ContinueDynamicImport takes arguments promiseCapability (a PromiseCapability Record), state (a DynamicImportState Record), and moduleCompletion (either a normal completion containing a Module Record or a throw completion) and returns unused. It completes the process of a dynamic import originally started by an import() call, resolving or rejecting the promise returned by that call as appropriate. It performs the following steps when called:

+
  1. Let promiseCapability be state.[[PromiseCapability]].
  2. If moduleCompletion is an abrupt completion, then
    1. Perform ! Call(promiseCapability.[[Reject]], undefined, « moduleCompletion.[[Value]] »).
    2. Return unused.
  3. Let module be moduleCompletion.[[Value]].
  4. If state.[[SourcePhase]] is true, then
    1. Let moduleSourceObject be module.[[ModuleSourceObject]].
    2. If moduleSourceObject is null, then
      1. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
      2. Return unused.
    3. Perform ! Call(promiseCapability.[[Resolve]], undefined, « moduleSourceObject »).
    4. Return unused.
  5. Let loadPromise be module.LoadRequestedModules().
  6. Let rejectedClosure be a new Abstract Closure with parameters (reason) that captures promiseCapability and performs the following steps when called:
    1. Perform ! Call(promiseCapability.[[Reject]], undefined, « reason »).
    2. Return unused.
  7. Let onRejected be CreateBuiltinFunction(rejectedClosure, 1, "", « »).
  8. Let linkAndEvaluateClosure be a new Abstract Closure with no parameters that captures module, promiseCapability, and onRejected and performs the following steps when called:
    1. Let link be Completion(module.Link()).
    2. If link is an abrupt completion, then
      1. Perform ! Call(promiseCapability.[[Reject]], undefined, « link.[[Value]] »).
      2. Return unused.
    3. Let evaluatePromise be module.Evaluate().
    4. Let fulfilledClosure be a new Abstract Closure with no parameters that captures module and promiseCapability and performs the following steps when called:
      1. Let namespace be GetModuleNamespace(module).
      2. Perform ! Call(promiseCapability.[[Resolve]], undefined, « namespace »).
      3. Return unused.
    5. Let onFulfilled be CreateBuiltinFunction(fulfilledClosure, "", 0, « »).
    6. Perform PerformPromiseThen(evaluatePromise, onFulfilled, onRejected).
  9. Let linkAndEvaluate be CreateBuiltinFunction(linkAndEvaluateClosure, "", 0, « »).
  10. Perform PerformPromiseThen(loadPromise, linkAndEvaluate, onRejected).
  11. Return unused.
 @@ -2625,30 +2625,30 @@

16.1.1 Module Semantics

16.1.1.1 Static Semantics: ModuleRequests

-

The syntax-directed operation ModuleRequests takes optional argument recursiveOnly (a Boolean) and returns a List of Strings. It is defined piecewise over the following productions:

+

The syntax-directed operation ModuleRequests takes optional argument recursiveOnly (a Boolean) and returns a List of Strings. It is defined piecewise over the following productions:

- Module : [empty] + Module : [empty] -
  1. Return a new empty List.
 +
  1. Return a new empty List.
 - ModuleItemList : ModuleItem + ModuleItemList : ModuleItem -
  1. Return ModuleRequests of ModuleItem.
 +
  1. Return ModuleRequests of ModuleItem.
 - ModuleItemList : - ModuleItemList - ModuleItem + ModuleItemList : + ModuleItemList + ModuleItem -
  1. Let moduleNames be ModuleRequests of ModuleItemList.
  2. Let additionalNames be ModuleRequests of ModuleItem.
  3. Append to moduleNames each element of additionalNames that is not already an element of moduleNames.
  4. Return moduleNames.
 +
  1. Let moduleNames be ModuleRequests of ModuleItemList.
  2. Let additionalNames be ModuleRequests of ModuleItem.
  3. Append to moduleNames each element of additionalNames that is not already an element of moduleNames.
  4. Return moduleNames.
 - ModuleItem : StatementListItem + ModuleItem : StatementListItem -
  1. Return a new empty List.
 +
  1. Return a new empty List.
 ImportDeclaration : import @@ -2669,16 +2669,16 @@

16.1.1.1 Static Semantics: ModuleRequests

 -
  1. If recursiveOnly is true, return a new empty List.
  2. Return ModuleRequests of FromClause.
 +
  1. If recursiveOnly is true, return a new empty List.
  2. Return ModuleRequests of FromClause.
 - ModuleSpecifier : StringLiteral + ModuleSpecifier : StringLiteral -
  1. Return a List whose sole element is the SV of StringLiteral.
 +
  1. Return a List whose sole element is the SV of StringLiteral.
 - ExportDeclaration : + ExportDeclaration : export - ExportFromClause + ExportFromClause FromClause ; @@ -2686,45 +2686,45 @@

16.1.1.1 Static Semantics: ModuleRequests
  1. Return the ModuleRequests of FromClause.
 - ExportDeclaration : + ExportDeclaration : export - NamedExports + NamedExports ; export - VariableStatement + VariableStatement export - Declaration + Declaration export default - HoistableDeclaration + HoistableDeclaration export default - ClassDeclaration + ClassDeclaration export default - AssignmentExpression + AssignmentExpression ; -
  1. Return a new empty List.
 +
  1. Return a new empty List.

16.1.1.2 Abstract Module Records

A Module Record encapsulates structural information about the imports and exports of a single module. This information is used to link the imports and exports of sets of connected modules. A Module Record includes four fields that are only used when evaluating a module.

-

For specification purposes Module Record values are values of the Record specification type and can be thought of as existing in a simple object-oriented hierarchy where Module Record is an abstract class with both abstract and concrete subclasses. This specification defines the abstract subclass named Cyclic Module Record and its concrete subclass named Source Text Module Record. Other specifications and implementations may define additional Module Record subclasses corresponding to alternative module definition facilities that they defined.

-

Module Record defines the fields listed in Table 2. All Module Definition subclasses include at least those fields. Module Record also defines the abstract method list in Table 45. All Module definition subclasses must provide concrete implementations of these abstract methods.

+

For specification purposes Module Record values are values of the Record specification type and can be thought of as existing in a simple object-oriented hierarchy where Module Record is an abstract class with both abstract and concrete subclasses. This specification defines the abstract subclass named Cyclic Module Record and its concrete subclass named Source Text Module Record. Other specifications and implementations may define additional Module Record subclasses corresponding to alternative module definition facilities that they defined.

+

Module Record defines the fields listed in Table 2. All Module Definition subclasses include at least those fields. Module Record also defines the abstract method list in Table 41. All Module definition subclasses must provide concrete implementations of these abstract methods.

Table 2: Module Record Fields
@@ -2745,10 +2745,10 @@

16.1.1.2 Abstract Module Records

[[Realm]] @@ -2756,10 +2756,10 @@

16.1.1.2 Abstract Module Records

[[Environment]] @@ -2770,7 +2770,7 @@

16.1.1.2 Abstract Module Records

an Object or empty @@ -2800,7 +2800,7 @@

16.1.1.2 Abstract Module Records

anything (default value is undefined)
- a Realm Record + a Realm Record - The Realm within which this module was created. + The Realm within which this module was created.
- a Module Environment Record or empty + a Module Environment Record or empty - The Environment Record containing the top level bindings for this module. This field is set when the module is linked. + The Environment Record containing the top level bindings for this module. This field is set when the module is linked.
- The Module Namespace Object (28.3) if one has been created for this module. + The Module Namespace Object (28.3) if one has been created for this module.
- Field reserved for use by host environments that need to associate additional information with a module. + Field reserved for use by host environments that need to associate additional information with a module.
@@ -2810,7 +2810,7 @@

16.1.1.2 Abstract Module Records

16.1.1.3 Cyclic Module Records

-

A Cyclic Module Record is used to represent information about a module that can participate in dependency cycles with other modules that are subclasses of the Cyclic Module Record type. Module Records that are not subclasses of the Cyclic Module Record type must not participate in dependency cycles with Source Text Module Records.

+

A Cyclic Module Record is used to represent information about a module that can participate in dependency cycles with other modules that are subclasses of the Cyclic Module Record type. Module Records that are not subclasses of the Cyclic Module Record type must not participate in dependency cycles with Source Text Module Records.

In addition to the fields defined in Table 2 Cyclic Module Records have the additional fields listed in Table 3

Table 3: Additional Fields of Cyclic Module Records
@@ -2841,10 +2841,10 @@

16.1.1.3 Cyclic Module Records

[[EvaluationError]] @@ -2852,7 +2852,7 @@

16.1.1.3 Cyclic Module Records

[[DFSIndex]] @@ -2885,10 +2885,10 @@

16.1.1.3 Cyclic Module Records

[[RequestedSourcePhasesOnly]] @@ -2927,7 +2927,7 @@

16.1.1.3 Cyclic Module Records

a Boolean @@ -2935,10 +2935,10 @@

16.1.1.3 Cyclic Module Records

[[TopLevelCapability]] @@ -2946,7 +2946,7 @@

16.1.1.3 Cyclic Module Records

[[AsyncParentModules]]
- a throw completion or empty + a throw completion or empty - A throw completion representing the exception that occurred during evaluation. undefined if no exception occurred or if [[Status]] is not evaluated. + A throw completion representing the exception that occurred during evaluation. undefined if no exception occurred or if [[Status]] is not evaluated.
- an integer or empty + an integer or empty Auxiliary field used during Link and Evaluate only. If [[Status]] is linking or evaluating, this non-negative number records the point at which the module was first visited during the depth-first traversal of the dependency graph. @@ -2863,7 +2863,7 @@

16.1.1.3 Cyclic Module Records

[[DFSAncestorIndex]] 		- an integer or empty + an integer or empty Auxiliary field used during Link and Evaluate only. If [[Status]] is linking or evaluating, this is either the module's own [[DFSIndex]] or that of an "earlier" module in the same strongly connected component. @@ -2874,10 +2874,10 @@

16.1.1.3 Cyclic Module Records

[[RequestedModules]] 		- a List of Strings + a List of Strings - A List of all the ModuleSpecifier strings used by the module represented by this record to request the importation of a module. The List is source text occurrence ordered. + A List of all the ModuleSpecifier strings used by the module represented by this record to request the importation of a module. The List is source text occurrence ordered.
- a List of Strings + a List of Strings - a List of all the ModuleSpecifier strings that have been imported exclusively using import module declarations, and thus that shouldn't be recursively loaded. + a List of all the ModuleSpecifier strings that have been imported exclusively using import module declarations, and thus that shouldn't be recursively loaded. Note

For example, given this code:

@@ -2916,7 +2916,7 @@

16.1.1.3 Cyclic Module Records

a Boolean
- Whether this module is individually asynchronous (for example, if it's a Source Text Module Record containing a top-level await). Having an asynchronous dependency does not mean this field is true. This field must not change after the module is parsed. + Whether this module is individually asynchronous (for example, if it's a Source Text Module Record containing a top-level await). Having an asynchronous dependency does not mean this field is true. This field must not change after the module is parsed.
- Whether this module is either itself asynchronous or has an asynchronous dependency. Note: The order in which this field is set is used to order queued executions, see 16.2.1.5.3.4. + Whether this module is either itself asynchronous or has an asynchronous dependency. Note: The order in which this field is set is used to order queued executions, see 16.2.1.5.3.4.
- a PromiseCapability Record or empty + a PromiseCapability Record or empty - If this module is the [[CycleRoot]] of some cycle, and Evaluate() was called on some module in that cycle, this field contains the PromiseCapability Record for that entire evaluation. It is used to settle the Promise object that is returned from the Evaluate() abstract method. This field will be empty for any dependencies of that module, unless a top-level Evaluate() has been initiated for some of those dependencies. + If this module is the [[CycleRoot]] of some cycle, and Evaluate() was called on some module in that cycle, this field contains the PromiseCapability Record for that entire evaluation. It is used to settle the Promise object that is returned from the Evaluate() abstract method. This field will be empty for any dependencies of that module, unless a top-level Evaluate() has been initiated for some of those dependencies.
- a List of Cyclic Module Records + a List of Cyclic Module Records If this module or a dependency has [[HasTLA]] true, and execution is in progress, this tracks the parent importers of this module for the top-level execution job. These parent modules will not start executing before this module has successfully completed execution. @@ -2957,7 +2957,7 @@

16.1.1.3 Cyclic Module Records

[[PendingAsyncDependencies]] 		- an integer or empty + an integer or empty If this module has any asynchronous dependencies, this tracks the number of asynchronous dependency modules remaining to execute for this module. A module with asynchronous dependencies will be executed when this field reaches 0 and there are no execution errors. @@ -2972,16 +2972,16 @@

16.1.1.3.1 LoadRequestedModules ( [ hostDef

16.1.1.3.1.1 InnerModuleLoading ( state, module [ , referrer [ , specifier ] ] )

-

The abstract operation InnerModuleLoading takes arguments state (a GraphLoadingState Record) and module (a Module Record) and optional arguments referrer (a Cyclic Module Record) and specifier (a String) and returns unused. It is used by LoadRequestedModules to recursively perform the actual loading process for module's dependency graph. It performs the following steps when called:

+

The abstract operation InnerModuleLoading takes arguments state (a GraphLoadingState Record) and module (a Module Record) and optional arguments referrer (a Cyclic Module Record) and specifier (a String) and returns unused. It is used by LoadRequestedModules to recursively perform the actual loading process for module's dependency graph. It performs the following steps when called:

-
  1. Assert: state.[[IsLoading]] is true.
  2. Let importOnlyAsPhase be false.
  3. If referrer has been specified, then
    1. Assert: specifier has been specified.
    2. If referrer.[[RequestedSourcePhasesOnly]] contains specifier, set importOnlyAsPhase to true.
  4. If importOnlyAsPhase is false, module is a Cyclic Module Record, module.[[Status]] is new, and state.[[Visited]] does not contain module, then
    1. Append module to state.[[Visited]].
    2. Let requestedModulesCount be the length of module.[[RequestedModules]].
    3. Set state.[[PendingModulesCount]] to state.[[PendingModulesCount]] + requestedModulesCount.
    4. For each String required of module.[[RequestedModules]], do
      1. If module.[[LoadedModules]] contains a Record record whose [[Specifier]] is required, then
        1. Perform InnerModuleLoading(state, record.[[Module]], module, required).
      2. Else,
        1. Perform HostLoadImportedModule(module, required, state.[[HostDefined]], state).
        2. NOTE: HostLoadImportedModule will call FinishLoadingImportedModule, which re-enters the graph loading process through ContinueModuleLoading.
      3. If state.[[IsLoading]] is false, return unused.
  5. Assert: state.[[PendingModulesCount]] ≥ 1.
  6. Set state.[[PendingModulesCount]] to state.[[PendingModulesCount]] - 1.
  7. If state.[[PendingModulesCount]] = 0, then
    1. Set state.[[IsLoading]] to false.
    2. For each Cyclic Module Record loaded in state.[[Visited]], do
      1. If loaded.[[Status]] is new, set loaded.[[Status]] to unlinked.
    3. Perform ! Call(state.[[PromiseCapability]].[[Resolve]], undefined, « undefined »).
  8. Return unused.
 +
  1. Assert: state.[[IsLoading]] is true.
  2. Let importOnlyAsPhase be false.
  3. If referrer has been specified, then
    1. Assert: specifier has been specified.
    2. If referrer.[[RequestedSourcePhasesOnly]] contains specifier, set importOnlyAsPhase to true.
  4. If importOnlyAsPhase is false, module is a Cyclic Module Record, module.[[Status]] is new, and state.[[Visited]] does not contain module, then
    1. Append module to state.[[Visited]].
    2. Let requestedModulesCount be the length of module.[[RequestedModules]].
    3. Set state.[[PendingModulesCount]] to state.[[PendingModulesCount]] + requestedModulesCount.
    4. For each String required of module.[[RequestedModules]], do
      1. If module.[[LoadedModules]] contains a Record record whose [[Specifier]] is required, then
        1. Perform InnerModuleLoading(state, record.[[Module]], module, required).
      2. Else,
        1. Perform HostLoadImportedModule(module, required, state.[[HostDefined]], state).
        2. NOTE: HostLoadImportedModule will call FinishLoadingImportedModule, which re-enters the graph loading process through ContinueModuleLoading.
      3. If state.[[IsLoading]] is false, return unused.
  5. Assert: state.[[PendingModulesCount]] ≥ 1.
  6. Set state.[[PendingModulesCount]] to state.[[PendingModulesCount]] - 1.
  7. If state.[[PendingModulesCount]] = 0, then
    1. Set state.[[IsLoading]] to false.
    2. For each Cyclic Module Record loaded in state.[[Visited]], do
      1. If loaded.[[Status]] is new, set loaded.[[Status]] to unlinked.
    3. Perform ! Call(state.[[PromiseCapability]].[[Resolve]], undefined, « undefined »).
  8. Return unused.

16.1.1.3.1.2 ContinueModuleLoading ( state, referrer, specifier, moduleCompletion )

-

The abstract operation ContinueModuleLoading takes arguments state (a GraphLoadingState Record), referrer (a Cyclic Module Record), specifier (a String), and moduleCompletion (either a normal completion containing a Module Record or a throw completion) and returns unused. It is used to re-enter the loading process after a call to HostLoadImportedModule. It performs the following steps when called:

+

The abstract operation ContinueModuleLoading takes arguments state (a GraphLoadingState Record), referrer (a Cyclic Module Record), specifier (a String), and moduleCompletion (either a normal completion containing a Module Record or a throw completion) and returns unused. It is used to re-enter the loading process after a call to HostLoadImportedModule. It performs the following steps when called:

-
  1. If state.[[IsLoading]] is false, return unused.
  2. If moduleCompletion is a normal completion, then
    1. Perform InnerModuleLoading(state, moduleCompletion.[[Value]], referrer, specifier).
  3. Else,
    1. Set state.[[IsLoading]] to false.
    2. Perform ! Call(state.[[PromiseCapability]].[[Reject]], undefined, « moduleCompletion.[[Value]] »).
  4. Return unused.
 +
  1. If state.[[IsLoading]] is false, return unused.
  2. If moduleCompletion is a normal completion, then
    1. Perform InnerModuleLoading(state, moduleCompletion.[[Value]], referrer, specifier).
  3. Else,
    1. Set state.[[IsLoading]] to false.
    2. Perform ! Call(state.[[PromiseCapability]].[[Reject]], undefined, « moduleCompletion.[[Value]] »).
  4. Return unused.
 @@ -2989,7 +2989,7 @@

16.1.1.3.1.2 ContinueModuleLoading ( state<

16.1.1.4 Source Text Module Records

-

An ImportEntry Record is a Record that digests information about a single declarative import. Each ImportEntry Record has the fields defined in Table 4:

+

An ImportEntry Record is a Record that digests information about a single declarative import. Each ImportEntry Record has the fields defined in Table 4:

Table 4: ImportEntry Record Fields
@@ -3042,27 +3042,27 @@

16.1.1.4 Source Text Module Records

16.1.1.4.1 ParseModule ( sourceText, realm, hostDefined )

-

The abstract operation ParseModule takes arguments sourceText (ECMAScript source text), realm (a Realm Record), and hostDefined (anything) and returns a Source Text Module Record or a non-empty List of SyntaxError objects. It creates a Source Text Module Record based upon the result of parsing sourceText as a Module. It performs the following steps when called:

-
  1. Let body be ParseText(sourceText, Module).
  2. If body is a List of errors, return body.
  3. Let requestedModules be the ModuleRequests of body.
  4. Let recursiveRequestedModules be the ModuleRequests of body with argument true.
  5. Let requestedSourcePhasesOnly be a list containing the elements of requestedModules that are not elements of recursiveRequestedModules
  6. Let importEntries be ImportEntries of body.
  7. Let importedBoundNames be ImportedLocalNames(importEntries).
  8. Let indirectExportEntries be a new empty List.
  9. Let localExportEntries be a new empty List.
  10. Let starExportEntries be a new empty List.
  11. Let exportEntries be ExportEntries of body.
  12. For each ExportEntry Record ee of exportEntries, do
    1. If ee.[[ModuleRequest]] is null, then
      1. If ee.[[LocalName]] is not an element of importedBoundNames, then
        1. Append ee to localExportEntries.
      2. Else,
        1. Let ie be the element of importEntries whose [[LocalName]] is the same as ee.[[LocalName]].
        2. If ie.[[ImportName]] is namespace-object, then
          1. NOTE: This is a re-export of an imported module namespace object.
          2. Append ee to localExportEntries.
        3. Else,
          1. NOTE: This is a re-export of a single name.
          2. Append the ExportEntry Record { [[ModuleRequest]]: ie.[[ModuleRequest]], [[ImportName]]: ie.[[ImportName]], [[LocalName]]: null, [[ExportName]]: ee.[[ExportName]] } to indirectExportEntries.
    2. Else if ee.[[ImportName]] is all-but-default, then
      1. Assert: ee.[[ExportName]] is null.
      2. Append ee to starExportEntries.
    3. Else,
      1. Append ee to indirectExportEntries.
  13. Let async be body Contains await.
  14. Return Source Text Module Record { [[Realm]]: realm, [[Environment]]: empty, [[Namespace]]: empty, [[CycleRoot]]: empty, [[HasTLA]]: async, [[AsyncEvaluation]]: false, [[TopLevelCapability]]: empty, [[AsyncParentModules]]: « », [[PendingAsyncDependencies]]: empty, [[Status]]: new, [[EvaluationError]]: empty, [[HostDefined]]: hostDefined, [[ECMAScriptCode]]: body, [[Context]]: empty, [[ImportMeta]]: empty, [[RequestedModules]]: requestedModules, [[RequestedSourcePhasesOnly]]: requestedSourcePhasesOnly, [[LoadedModules]]: a new empty List, [[ImportEntries]]: importEntries, [[LocalExportEntries]]: localExportEntries, [[IndirectExportEntries]]: indirectExportEntries, [[StarExportEntries]]: starExportEntries, [[DFSIndex]]: empty, [[DFSAncestorIndex]]: empty, [[ModuleSourceObject]]: null }. +

    The abstract operation ParseModule takes arguments sourceText (ECMAScript source text), realm (a Realm Record), and hostDefined (anything) and returns a Source Text Module Record or a non-empty List of SyntaxError objects. It creates a Source Text Module Record based upon the result of parsing sourceText as a Module. It performs the following steps when called:

    +
    1. Let body be ParseText(sourceText, Module).
    2. If body is a List of errors, return body.
    3. Let requestedModules be the ModuleRequests of body.
    4. Let recursiveRequestedModules be the ModuleRequests of body with argument true.
    5. Let requestedSourcePhasesOnly be a list containing the elements of requestedModules that are not elements of recursiveRequestedModules
    6. Let importEntries be ImportEntries of body.
    7. Let importedBoundNames be ImportedLocalNames(importEntries).
    8. Let indirectExportEntries be a new empty List.
    9. Let localExportEntries be a new empty List.
    10. Let starExportEntries be a new empty List.
    11. Let exportEntries be ExportEntries of body.
    12. For each ExportEntry Record ee of exportEntries, do
      1. If ee.[[ModuleRequest]] is null, then
        1. If ee.[[LocalName]] is not an element of importedBoundNames, then
          1. Append ee to localExportEntries.
        2. Else,
          1. Let ie be the element of importEntries whose [[LocalName]] is the same as ee.[[LocalName]].
          2. If ie.[[ImportName]] is namespace-object, then
            1. NOTE: This is a re-export of an imported module namespace object.
            2. Append ee to localExportEntries.
          3. Else,
            1. NOTE: This is a re-export of a single name.
            2. Append the ExportEntry Record { [[ModuleRequest]]: ie.[[ModuleRequest]], [[ImportName]]: ie.[[ImportName]], [[LocalName]]: null, [[ExportName]]: ee.[[ExportName]] } to indirectExportEntries.
      2. Else if ee.[[ImportName]] is all-but-default, then
        1. Assert: ee.[[ExportName]] is null.
        2. Append ee to starExportEntries.
      3. Else,
        1. Append ee to indirectExportEntries.
    13. Let async be body Contains await.
    14. Return Source Text Module Record { [[Realm]]: realm, [[Environment]]: empty, [[Namespace]]: empty, [[CycleRoot]]: empty, [[HasTLA]]: async, [[AsyncEvaluation]]: false, [[TopLevelCapability]]: empty, [[AsyncParentModules]]: « », [[PendingAsyncDependencies]]: empty, [[Status]]: new, [[EvaluationError]]: empty, [[HostDefined]]: hostDefined, [[ECMAScriptCode]]: body, [[Context]]: empty, [[ImportMeta]]: empty, [[RequestedModules]]: requestedModules, [[RequestedSourcePhasesOnly]]: requestedSourcePhasesOnly, [[LoadedModules]]: a new empty List, [[ImportEntries]]: importEntries, [[LocalExportEntries]]: localExportEntries, [[IndirectExportEntries]]: indirectExportEntries, [[StarExportEntries]]: starExportEntries, [[DFSIndex]]: empty, [[DFSAncestorIndex]]: empty, [[ModuleSourceObject]]: null }.
    Editor's Note
    - Layer 0 of the Compartments proposal defines ModuleSource objects, which would be used here as the [[ModuleSourceObject]] of Source Text Module Records. + Layer 0 of the Compartments proposal defines ModuleSource objects, which would be used here as the [[ModuleSourceObject]] of Source Text Module Records.

    16.1.1.4.2 InitializeEnvironment ( )

    -

    The InitializeEnvironment concrete method of a Source Text Module Record module takes no arguments and returns either a normal completion containing unused or a throw completion. It performs the following steps when called:

    +

    The InitializeEnvironment concrete method of a Source Text Module Record module takes no arguments and returns either a normal completion containing unused or a throw completion. It performs the following steps when called:

    -
    1. For each ExportEntry Record e of module.[[IndirectExportEntries]], do
      1. Let resolution be module.ResolveExport(e.[[ExportName]]).
      2. If resolution is null or ambiguous, throw a SyntaxError exception.
      3. Assert: resolution is a ResolvedBinding Record.
    2. Assert: All named exports from module are resolvable.
    3. Let realm be module.[[Realm]].
    4. Assert: realm is not undefined.
    5. Let env be NewModuleEnvironment(realm.[[GlobalEnv]]).
    6. Set module.[[Environment]] to env.
    7. For each ImportEntry Record in of module.[[ImportEntries]], do
      1. Let importedModule be GetImportedModule(module, in.[[ModuleRequest]]).
      2. If in.[[ImportName]] is namespace-object, then
        1. Let namespace be GetModuleNamespace(importedModule).
        2. Perform ! env.CreateImmutableBinding(in.[[LocalName]], true).
        3. Perform ! env.InitializeBinding(in.[[LocalName]], namespace).
      3. Else if in.[[ImportName]] is module, then
        1. Let moduleSourceObject be importedModule.[[ModuleSourceObject]].
        2. If moduleSourceObject is null, throw a TypeError exception.
        3. Perform ! env.CreateImmutableBinding(in.[[LocalName]], true).
        4. Perform ! env.InitializeBinding(in.[[LocalName]], moduleSourceObject).
      4. Else,
        1. Let resolution be importedModule.ResolveExport(in.[[ImportName]]).
        2. If resolution is null or ambiguous, throw a SyntaxError exception.
        3. If resolution.[[BindingName]] is namespace, then
          1. Let namespace be GetModuleNamespace(resolution.[[Module]]).
          2. Perform ! env.CreateImmutableBinding(in.[[LocalName]], true).
          3. Perform ! env.InitializeBinding(in.[[LocalName]], namespace).
        4. Else,
          1. Perform env.CreateImportBinding(in.[[LocalName]], resolution.[[Module]], resolution.[[BindingName]]).
    8. Let moduleContext be a new ECMAScript code execution context.
    9. Set the Function of moduleContext to null.
    10. Assert: module.[[Realm]] is not undefined.
    11. Set the Realm of moduleContext to module.[[Realm]].
    12. Set the ScriptOrModule of moduleContext to module.
    13. Set the VariableEnvironment of moduleContext to module.[[Environment]].
    14. Set the LexicalEnvironment of moduleContext to module.[[Environment]].
    15. Set the PrivateEnvironment of moduleContext to null.
    16. Set module.[[Context]] to moduleContext.
    17. Push moduleContext onto the execution context stack; moduleContext is now the running execution context.
    18. Let code be module.[[ECMAScriptCode]].
    19. Let varDeclarations be the VarScopedDeclarations of code.
    20. Let declaredVarNames be a new empty List.
    21. For each element d of varDeclarations, do
      1. For each element dn of the BoundNames of d, do
        1. If dn is not an element of declaredVarNames, then
          1. Perform ! env.CreateMutableBinding(dn, false).
          2. Perform ! env.InitializeBinding(dn, undefined).
          3. Append dn to declaredVarNames.
    22. Let lexDeclarations be the LexicallyScopedDeclarations of code.
    23. Let privateEnv be null.
    24. For each element d of lexDeclarations, do
      1. For each element dn of the BoundNames of d, do
        1. If IsConstantDeclaration of d is true, then
          1. Perform ! env.CreateImmutableBinding(dn, true).
        2. Else,
          1. Perform ! env.CreateMutableBinding(dn, false).
        3. If d is a FunctionDeclaration, a GeneratorDeclaration, an AsyncFunctionDeclaration, or an AsyncGeneratorDeclaration, then
          1. Let fo be InstantiateFunctionObject of d with arguments env and privateEnv.
          2. Perform ! env.InitializeBinding(dn, fo).
    25. Remove moduleContext from the execution context stack.
    26. Return unused.
     +
    1. For each ExportEntry Record e of module.[[IndirectExportEntries]], do
      1. Let resolution be module.ResolveExport(e.[[ExportName]]).
      2. If resolution is null or ambiguous, throw a SyntaxError exception.
      3. Assert: resolution is a ResolvedBinding Record.
    2. Assert: All named exports from module are resolvable.
    3. Let realm be module.[[Realm]].
    4. Assert: realm is not undefined.
    5. Let env be NewModuleEnvironment(realm.[[GlobalEnv]]).
    6. Set module.[[Environment]] to env.
    7. For each ImportEntry Record in of module.[[ImportEntries]], do
      1. Let importedModule be GetImportedModule(module, in.[[ModuleRequest]]).
      2. If in.[[ImportName]] is namespace-object, then
        1. Let namespace be GetModuleNamespace(importedModule).
        2. Perform ! env.CreateImmutableBinding(in.[[LocalName]], true).
        3. Perform ! env.InitializeBinding(in.[[LocalName]], namespace).
      3. Else if in.[[ImportName]] is module, then
        1. Let moduleSourceObject be importedModule.[[ModuleSourceObject]].
        2. If moduleSourceObject is null, throw a TypeError exception.
        3. Perform ! env.CreateImmutableBinding(in.[[LocalName]], true).
        4. Perform ! env.InitializeBinding(in.[[LocalName]], moduleSourceObject).
      4. Else,
        1. Let resolution be importedModule.ResolveExport(in.[[ImportName]]).
        2. If resolution is null or ambiguous, throw a SyntaxError exception.
        3. If resolution.[[BindingName]] is namespace, then
          1. Let namespace be GetModuleNamespace(resolution.[[Module]]).
          2. Perform ! env.CreateImmutableBinding(in.[[LocalName]], true).
          3. Perform ! env.InitializeBinding(in.[[LocalName]], namespace).
        4. Else,
          1. Perform env.CreateImportBinding(in.[[LocalName]], resolution.[[Module]], resolution.[[BindingName]]).
    8. Let moduleContext be a new ECMAScript code execution context.
    9. Set the Function of moduleContext to null.
    10. Assert: module.[[Realm]] is not undefined.
    11. Set the Realm of moduleContext to module.[[Realm]].
    12. Set the ScriptOrModule of moduleContext to module.
    13. Set the VariableEnvironment of moduleContext to module.[[Environment]].
    14. Set the LexicalEnvironment of moduleContext to module.[[Environment]].
    15. Set the PrivateEnvironment of moduleContext to null.
    16. Set module.[[Context]] to moduleContext.
    17. Push moduleContext onto the execution context stack; moduleContext is now the running execution context.
    18. Let code be module.[[ECMAScriptCode]].
    19. Let varDeclarations be the VarScopedDeclarations of code.
    20. Let declaredVarNames be a new empty List.
    21. For each element d of varDeclarations, do
      1. For each element dn of the BoundNames of d, do
        1. If dn is not an element of declaredVarNames, then
          1. Perform ! env.CreateMutableBinding(dn, false).
          2. Perform ! env.InitializeBinding(dn, undefined).
          3. Append dn to declaredVarNames.
    22. Let lexDeclarations be the LexicallyScopedDeclarations of code.
    23. Let privateEnv be null.
    24. For each element d of lexDeclarations, do
      1. For each element dn of the BoundNames of d, do
        1. If IsConstantDeclaration of d is true, then
          1. Perform ! env.CreateImmutableBinding(dn, true).
        2. Else,
          1. Perform ! env.CreateMutableBinding(dn, false).
        3. If d is a FunctionDeclaration, a GeneratorDeclaration, an AsyncFunctionDeclaration, or an AsyncGeneratorDeclaration, then
          1. Let fo be InstantiateFunctionObject of d with arguments env and privateEnv.
          2. Perform ! env.InitializeBinding(dn, fo).
    25. Remove moduleContext from the execution context stack.
    26. Return unused.

    16.1.1.8 FinishLoadingImportedModule ( referrer, specifier, state, result )

    -

    The abstract operation FinishLoadingImportedModule takes arguments referrer (a Script Record, a Cyclic Module Record, or a Realm Record), specifier (a String), state (a GraphLoadingState Record or a DynamicImportState Record), and result (either a normal completion containing a Module Record or a throw completion) and returns unused. It performs the following steps when called:

    -
    1. If result is a normal completion, then
      1. If referrer.[[LoadedModules]] contains a Record record such that record.[[Specifier]] is specifier, then
        1. Assert: record.[[Module]] is result.[[Value]].
      2. Else, append the Record { [[Specifier]]: specifier, [[Module]]: result.[[Value]] } to referrer.[[LoadedModules]].
    2. If state is a GraphLoadingState Record, then
      1. Perform ContinueModuleLoading(state, referrer, specifier, result).
    3. Else,
      1. Perform ContinueDynamicImport(state, result).
     +

    The abstract operation FinishLoadingImportedModule takes arguments referrer (a Script Record, a Cyclic Module Record, or a Realm Record), specifier (a String), state (a GraphLoadingState Record or a DynamicImportState Record), and result (either a normal completion containing a Module Record or a throw completion) and returns unused. It performs the following steps when called:

    +
    1. If result is a normal completion, then
      1. If referrer.[[LoadedModules]] contains a Record record such that record.[[Specifier]] is specifier, then
        1. Assert: record.[[Module]] is result.[[Value]].
      2. Else, append the Record { [[Specifier]]: specifier, [[Module]]: result.[[Value]] } to referrer.[[LoadedModules]].
    2. If state is a GraphLoadingState Record, then
      1. Perform ContinueModuleLoading(state, referrer, specifier, result).
    3. Else,
      1. Perform ContinueDynamicImport(state, result).
         @@ -3161,49 +3161,49 @@

    Syntax

    ImportedBinding - ModuleExportName + ModuleExportName as ImportedBinding ModuleSpecifier : - StringLiteral + StringLiteral ImportedBinding : - BindingIdentifier[~Yield, +Await] + BindingIdentifier[~Yield, +Await]

    16.2.1 Static Semantics: ImportEntries ( )

    -

    The syntax-directed operation ImportEntries takes no arguments and returns a List of ImportEntry Records. It is defined piecewise over the following productions:

    +

    The syntax-directed operation ImportEntries takes no arguments and returns a List of ImportEntry Records. It is defined piecewise over the following productions:

    - Module : [empty] + Module : [empty] -
    1. Return a new empty List.
     +
    1. Return a new empty List.
     - ModuleItemList : - ModuleItemList - ModuleItem + ModuleItemList : + ModuleItemList + ModuleItem -
    1. Let entries1 be ImportEntries of ModuleItemList.
    2. Let entries2 be ImportEntries of ModuleItem.
    3. Return the list-concatenation of entries1 and entries2.
     +
    1. Let entries1 be ImportEntries of ModuleItemList.
    2. Let entries2 be ImportEntries of ModuleItem.
    3. Return the list-concatenation of entries1 and entries2.
     - ModuleItem : - ExportDeclaration + ModuleItem : + ExportDeclaration - StatementListItem + StatementListItem -
    1. Return a new empty List.
     +
    1. Return a new empty List.
     ImportDeclaration : import @@ -3213,7 +3213,7 @@

    16.2.1 Static Semantics: ImportEntries ( )

         -
    1. Let module be the sole element of ModuleRequests of FromClause.
    2. Return ImportEntriesForModule of ImportClause with argument module.
     +
    1. Let module be the sole element of ModuleRequests of FromClause.
    2. Return ImportEntriesForModule of ImportClause with argument module.
     ImportDeclaration : import @@ -3222,7 +3222,7 @@

    16.2.1 Static Semantics: ImportEntries ( )

         -
    1. Return a new empty List.
     +
    1. Return a new empty List.
     ImportDeclaration : import @@ -3233,7 +3233,7 @@

    16.2.1 Static Semantics: ImportEntries ( )

         -
    1. Let localName be the sole element of BoundNames of ImportedBinding.
    2. Let entry be the ImportEntry Record { [[ModuleRequest]]: module, [[ImportName]]: module, [[LocalName]]: localName }.
    3. Return « entry ».
     +
    1. Let localName be the sole element of BoundNames of ImportedBinding.
    2. Let entry be the ImportEntry Record { [[ModuleRequest]]: module, [[ImportName]]: module, [[LocalName]]: localName }.
    3. Return « entry ».
         diff --git a/package.json b/package.json index ed2f9fc..6ccb1c5 100644 --- a/package.json +++ b/package.json @@ -5,7 +5,7 @@ "scripts": { "start": "npm run build-loose -- --watch", "build": "npm run build-loose -- --strict", - "build-loose": "ecmarkup --load-biblio ./ecma262-biblio.json --verbose spec.emu index.html" + "build-loose": "ecmarkup --load-biblio @tc39/ecma262-biblio --verbose spec.emu index.html" }, "homepage": "https://github.com/tc39/proposal-import-reflection#readme", "repository": { @@ -14,7 +14,7 @@ }, "license": "MIT", "devDependencies": { - "@tc39/ecma262-biblio": "2.1.2462", + "@tc39/ecma262-biblio": "2.1.2485", "ecmarkup": "^15.0.4" } }