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infer number index signature in JS object literals (#26221)

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Fixes: #26208
This commit is contained in:
Klaus Meinhardt
2018-08-06 20:52:51 +02:00
committed by Wesley Wigham
parent 16343208c8
commit 7299bceafb
5 changed files with 121 additions and 1 deletions
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src/compiler/checker.ts
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@@ -16836,7 +16836,7 @@ namespace ts {
function createObjectLiteralType() {
const stringIndexInfo = hasComputedStringProperty ? getObjectLiteralIndexInfo(node.properties, offset, propertiesArray, IndexKind.String) : undefined;
const numberIndexInfo = hasComputedNumberProperty && !isJSObjectLiteral ? getObjectLiteralIndexInfo(node.properties, offset, propertiesArray, IndexKind.Number) : undefined;
const numberIndexInfo = hasComputedNumberProperty ? getObjectLiteralIndexInfo(node.properties, offset, propertiesArray, IndexKind.Number) : undefined;
const result = createAnonymousType(node.symbol, propertiesTable, emptyArray, emptyArray, stringIndexInfo, numberIndexInfo);
const freshObjectLiteralFlag = compilerOptions.suppressExcessPropertyErrors ? 0 : TypeFlags.FreshLiteral;
result.flags |= TypeFlags.ContainsObjectLiteral | freshObjectLiteralFlag | (typeFlags & TypeFlags.PropagatingFlags);