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Adjust source map offsets for variables in downlevel async funcs and generators

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This commit is contained in:
Ron Buckton
2017-06-08 14:15:40 -07:00
parent b94c51360b
commit ef86f7da50
8 changed files with 101 additions and 8 deletions
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2
src/compiler/transformer.ts
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@@ -239,7 +239,7 @@ namespace ts {
function hoistVariableDeclaration(name: Identifier): void {
Debug.assert(state > TransformationState.Uninitialized, "Cannot modify the lexical environment during initialization.");
Debug.assert(state < TransformationState.Completed, "Cannot modify the lexical environment after transformation has completed.");
const decl = createVariableDeclaration(name);
const decl = setEmitFlags(createVariableDeclaration(name), EmitFlags.NoNestedSourceMaps);
if (!lexicalEnvironmentVariableDeclarations) {
lexicalEnvironmentVariableDeclarations = [decl];
}

20
src/compiler/transformers/generators.ts
View File

@@ -640,10 +640,13 @@ namespace ts {
return undefined;
}
return createStatement(
inlineExpressions(
map(variables, transformInitializedVariable)
)
return setSourceMapRange(
createStatement(
inlineExpressions(
map(variables, transformInitializedVariable)
)
),
node
);
}
}
@@ -1281,9 +1284,12 @@ namespace ts {
}
function transformInitializedVariable(node: VariableDeclaration) {
return createAssignment(
<Identifier>getSynthesizedClone(node.name),
visitNode(node.initializer, visitor, isExpression)
return setSourceMapRange(
createAssignment(
setSourceMapRange(<Identifier>getSynthesizedClone(node.name), node.name),
visitNode(node.initializer, visitor, isExpression)
),
node
);
}