Prepare for integration with String Builtins

document/js-api/index.bs

@@ -1386,9 +1386,12 @@ To <dfn export>parse a WebAssembly module</dfn> given a <a>byte sequence</a> |by
 1. Let |stableBytes| be a [=get a copy of the buffer source|copy of the bytes held by the buffer=] |bytes|.
 1. [=Compile a WebAssembly module|Compile the WebAssembly module=] |stableBytes| and store the result as |module|.
 1. If |module| is [=error=], throw a {{CompileError}} exception.
+1. Note: When integrating with the JS String Builtins proposal, |builtinSetNames| should be passed in the following step as « "js-string" » and |importedStringModule| as null.
 1. [=Construct a WebAssembly module object=] from |module| and |bytes|, and let |module| be the result.
 1. Let |requestedModules| be a set.
-1. For each (|moduleName|, <var ignore>name</var>, <var ignore>type</var>) in [=module_imports=](|module|.\[[Module]]),
+1. For each (|moduleName|, |name|, |type|) in [=module_imports=](|module|.\[[Module]]),
+    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 |moduleRecord| be {
       <!-- Abstract Module Records -->
@@ -1414,6 +1417,8 @@ To <dfn export>parse a WebAssembly module</dfn> given a <a>byte sequence</a> |by
 1. Set |module|.\[[ModuleRecord]] to |moduleRecord|.
 1. Return |moduleRecord|.
 
+Note: While this spec is not currently merged with the JS String Builtins proposal, the steps to take when merging are noted here for reference.
+
 Note: From HTML, it's not observable when [=parse a WebAssembly module=] begins, so any work perfomed in compilation may be performed off-thread.
 </div>
 
@@ -1473,6 +1478,8 @@ WebAssembly Module Records have the following methods:
 1. Let |module| be |record|.\[[ModuleSource]].
 1. Let |imports| be a new, empty [=map=].
 1. For each (|importedModuleName|, |name|, <var ignore>type</var>) in [=module_imports=](|module|.\[[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. If |imports|[|importedModuleName|] does not exist, set |imports|[|importedModuleName|] to a new, empty [=map=].
     1. Let |importedModule| be [$GetImportedModule$](|record|, |importedModuleName|).
     1. Let |value| be ? |importedModule|.\[[Environment]].GetBindingValue(|name|, true).