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Fix 8549: Using variable as Jsx tagname #9337

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Merged
yuit merged 11 commits into from
Jun 24, 2016
Merged

Fix 8549: Using variable as Jsx tagname #9337

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24f3f18
Parse JSXElement's name as property access instead of just entity nam…
Jun 23, 2016
49957a1
wip - just resolve to any type for now
Jun 23, 2016
1369108
Resolve string type to anytype and look up property in intrinsicEleme…
Jun 23, 2016
2e39d1a
Add tests and update baselines
Jun 23, 2016
d5976a5
Merge branch 'fix8549' of https://github.com/Microsoft/TypeScript int…
Jun 23, 2016
e117d02
Remove unneccessary comment
yuit Jun 23, 2016
7a3f88a
wip-address PR
Jun 23, 2016
0e17ac8
Address PR
Jun 24, 2016
cc4a5c7
Add tets and update baselines
Jun 24, 2016
ae38ea5
Merge branch 'fix8549' of https://github.com/Microsoft/TypeScript int…
Jun 24, 2016
d07b27e
Fix linting error
Jun 24, 2016
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Resolve string type to anytype and look up property in intrinsicEleme… 
…ntsType of Jsx
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Kanchalai Tanglertsampan committed Jun 23, 2016
commit 1369108257137e4ef6274805edf4b00017c7f2d5
23 changes: 23 additions & 0 deletions src/compiler/checker.ts
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Expand Up @@ -9825,6 +9825,29 @@ namespace ts {
}));
}

// If the elemType is a string type, we have to return anyType to prevent an error downstream as we will try to find construct or call signature of the type
if (elemType.flags & TypeFlags.String) {
return anyType;
}
else if (elemType.flags & TypeFlags.StringLiteral) {
// If the elemType is a stringLiteral type, we can then provide a check and give
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@RyanCavanaugh RyanCavanaugh Jun 23, 2016

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Finish sentence in comment

const intrinsicElementsType = getJsxType(JsxNames.IntrinsicElements);
if (intrinsicElementsType !== unknownType) {
const stringLiteralTypeName = (<StringLiteralType>elemType).text;
const intrinsicProp = getPropertyOfType(intrinsicElementsType, stringLiteralTypeName);
if (intrinsicProp) {
return getTypeOfSymbol(intrinsicProp);
}
const indexSignatureType = getIndexTypeOfType(intrinsicElementsType, IndexKind.String);
if (indexSignatureType) {
return indexSignatureType;
}
error(node, Diagnostics.Property_0_does_not_exist_on_type_1, stringLiteralTypeName, "JSX." + JsxNames.IntrinsicElements)
// If we need to report an error, we already done so here. So just return any to prevent any more error downstream
return anyType;
}
}
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@DanielRosenwasser DanielRosenwasser Jun 23, 2016

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Doesn't look like you return anyType/unknownType if you couldn't find an intrinsicElementsType for a string literal.

Why not make it

if (intrinsicElementsType === unknownType) {
    return unknownType;
}

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@yuit yuit Jun 24, 2016

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that is actually intended that if intrinsicElementsType === unknownType then you just fall through and check for the construct/call though, arguably we should actually return unknownType instead


// Get the element instance type (the result of newing or invoking this tag)
const elemInstanceType = getJsxElementInstanceType(node, elemType);

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