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Only contextually type expressions of calls

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Also allocate once instead of twice.
This commit is contained in:
Nathan Shively-Sanders
2016-05-05 18:00:12 -07:00
parent b0a387aafa
commit 96d3db212e
2 changed files with 23 additions and 17 deletions
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14
src/compiler/checker.ts
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@@ -8525,9 +8525,13 @@ namespace ts {
const indexOfParameter = indexOf(func.parameters, parameter);
if (iife.arguments && indexOfParameter < iife.arguments.length) {
if (parameter.dotDotDotToken) {
return createArrayType(getUnionType(map(iife.arguments.slice(indexOfParameter), getTypeOfExpression)));
const restTypes: Type[] = [];
for (let i = indexOfParameter; i < iife.arguments.length; i++) {
restTypes.push(getTypeOfExpression(iife.arguments[i]));
}
return createArrayType(getUnionType(restTypes));
}
return checkExpression(iife.arguments[indexOfParameter], identityMapper);
return checkExpression(iife.arguments[indexOfParameter]);
}
}
const contextualSignature = getContextualSignature(func);
@@ -8552,11 +8556,13 @@ namespace ts {
function getImmediatelyInvokedFunctionExpression(func: FunctionExpression | MethodDeclaration) {
if (isFunctionExpressionOrArrowFunction(func)) {
let parent = func.parent;
let prev: Node = func;
let parent: Node = func.parent;
while (parent.kind === SyntaxKind.ParenthesizedExpression) {
prev = parent;
parent = parent.parent;
}
if (parent.kind === SyntaxKind.CallExpression) {
if (parent.kind === SyntaxKind.CallExpression && (parent as CallExpression).expression === prev) {
return parent as CallExpression;
}
}