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Integrate with latest ECMA-262 import attributes #116

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c61529a
Integrate with latest ECMA-262 import attributes
guybedford Oct 4, 2025
4ec1c3b
note first index
guybedford Oct 28, 2025
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32 changes: 29 additions & 3 deletions document/js-api/index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,8 @@ urlPrefix: https://tc39.github.io/ecma262/; spec: ECMASCRIPT
text: ToBigInt64; url: sec-tobigint64
text: Module Namespace exotic object; url: sec-module-namespace-exotic-objects
text: ResolvedBinding Record; url: resolvedbinding-record
text: ModuleRequest Record; url: modulerequest-record
text: ImportAttribute Record; url: importattribute-record
type: abstract-op
text: CreateDataPropertyOrThrow; url: sec-createdatapropertyorthrow
text: CreateMethodProperty; url: sec-createmethodproperty
Expand Down Expand Up @@ -286,11 +288,15 @@ urlPrefix: https://tc39.es/proposal-resizablearraybuffer/; spec: ResizableArrayB
text: handled; url: sec-hostresizearraybuffer
text: IsFixedLengthArrayBuffer; url: sec-isfixedarraybuffer
text: HostResizeArrayBuffer; url: sec-hostresizearraybuffer
urlPrefix: https://url.spec.whatwg.org/; spec: URL
type: dfn
text: application/x-www-form-urlencoded string parsing; url: concept-urlencoded-string-parser
</pre>

<pre class='link-defaults'>
spec:infra; type:dfn; text:list
spec:infra; type:dfn; text:byte sequence
spec:infra; type:dfn; text:scalar value string
spec:ecma-262; type:exception; for:ECMAScript; text:Error
spec:ecmascript; type:exception; for:ECMAScript; text:TypeError
spec:ecmascript; type:exception; for:ECMAScript; text:RangeError
Expand Down Expand Up @@ -2320,7 +2326,8 @@ To <dfn export>parse a WebAssembly module</dfn> given a <a>byte sequence</a> |by
1. Throw a {{LinkError}} exception.
1. Note: The following step only applies when integrating with the JS String Builtins proposal.
1. If [=Find a builtin=] with (|moduleName|, |name|, |type|) and builtins |module|.\[[BuiltinSets]] is not null, then [=iteration/continue=].
1. [=set/Append=] |moduleName| to |requestedModules|.
1. Let (|moduleRequest|, <var ignore>importName</var>) be the [=module request=] for |moduleName| and |name|.
1. [=set/Append=] |moduleRequest| to |requestedModules|.
1. For each (|name|, <var ignore>type</var>) in [=module_exports=](|module|.\[[Module]])
1. If |name| starts with the prefix "wasm:" or "wasm-js:",
1. Throw a {{LinkError}} exception.
Expand Down Expand Up @@ -2364,6 +2371,24 @@ The <dfn>export name list</dfn> of a WebAssembly Module Record |record| is defin

</div>

<div algorithm>
The <dfn>module request</dfn> for a string |moduleName| and a string |name| is defined by the following algorithm:

1. Let |attributes| be an empty [=set=].
1. Let |importName| be |name|.
1. If |name| is a [=scalar value string=] and contains the string "?",
1. Let |index| be the first index of "?" in |name|.
1. Set |importName| to the substring of |name| from 0 to |index|.
1. Let |query| be the substring of |name| after |index|.
1. Let |params| be the result of [=application/x-www-form-urlencoded string parsing|parsing=] |query|.
1. For each (|key|, |value|) in |params|
1. Let |attribute| be the [=ImportAttribute Record=] { \[[Key]]: |key|, \[[Value]]: |value| }.
1. [=set/Append=] |attribute| to |attributes|.
1. Let |moduleRequest| be a new [=ModuleRequest Record=] { \[[Specifier]]: |moduleName|, \[[Attributes]]: |attributes| }.
1. Return (|moduleRequest|, |importName|).

</div>

WebAssembly Module Records have the following methods:

<div algorithm=GetExportedNames>
Expand Down Expand Up @@ -2411,8 +2436,9 @@ WebAssembly Module Records have the following methods:
1. [=list/iterate|For each=] (|importedModuleName|, |name|, |importtype|) in [=module_imports=](|module|),
1. Note: The following step only applies when integrating with the JS String Builtins proposal.
1. If [=Find a builtin=] with (|importedModuleName|, |name|) and builtins |module|.\[[BuiltinSets]] is not null, then [=iteration/continue=].
1. Let |importedModule| be [$GetImportedModule$](|record|, |importedModuleName|).
1. Let |resolution| be |importedModule|.ResolveExport(|name|).
1. Let (|moduleRequest|, |importName|) be the [=module request=] for |moduleName| and |name|.
1. Let |importedModule| be [$GetImportedModule$](|record|, |moduleRequest|).
1. Let |resolution| be |importedModule|.ResolveExport(|importName|).
1. Assert: |resolution| is a [=ResolvedBinding Record=], as validated during environment initialization.
1. Let |resolvedModule| be |resolution|.\\[[Module]].
1. Let |resolvedName| be |resolution|.\[[BindingName]].
Expand Down
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