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Move synthetic comments from arrow body expressions to return statement (#24135)

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This commit is contained in:
Wesley Wigham
2018-05-15 13:11:38 -07:00
committed by GitHub
parent 9484653657
commit 86dce41ec0
6 changed files with 45 additions and 0 deletions
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9
src/compiler/factory.ts
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@@ -2900,6 +2900,15 @@ namespace ts {
return setSyntheticTrailingComments(node, append<SynthesizedComment>(getSyntheticTrailingComments(node), { kind, pos: -1, end: -1, hasTrailingNewLine, text }));
}
export function moveSyntheticComments<T extends Node>(node: T, original: Node): T {
setSyntheticLeadingComments(node, getSyntheticLeadingComments(original));
setSyntheticTrailingComments(node, getSyntheticTrailingComments(original));
const emit = getOrCreateEmitNode(original);
emit.leadingComments = undefined;
emit.trailingComments = undefined;
return node;
}
/**
* Gets the constant value to emit for an expression.
*/

1
src/compiler/transformers/es2015.ts
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@@ -1885,6 +1885,7 @@ namespace ts {
const expression = visitNode(body, visitor, isExpression);
const returnStatement = createReturn(expression);
setTextRange(returnStatement, body);
moveSyntheticComments(returnStatement, body);
setEmitFlags(returnStatement, EmitFlags.NoTokenSourceMaps | EmitFlags.NoTrailingSourceMap | EmitFlags.NoTrailingComments);
statements.push(returnStatement);