Simplified JSX contextual typing code and added support for contextually typing string literal attribute initializers.
This commit is contained in:
parent
4dc85dcbd6
commit
a0ef319f5d
1 changed files with 14 additions and 14 deletions
|
@ -7464,24 +7464,22 @@ namespace ts {
|
|||
return node === conditional.whenTrue || node === conditional.whenFalse ? getContextualType(conditional) : undefined;
|
||||
}
|
||||
|
||||
function getContextualTypeForJsxExpression(expr: JsxExpression | JsxSpreadAttribute): Type {
|
||||
// Contextual type only applies to JSX expressions that are in attribute assignments (not in 'Children' positions)
|
||||
if (expr.parent.kind === SyntaxKind.JsxAttribute) {
|
||||
const attrib = <JsxAttribute>expr.parent;
|
||||
const attrsType = getJsxElementAttributesType(<JsxOpeningLikeElement>attrib.parent);
|
||||
function getContextualTypeForJsxAttribute(attribute: JsxAttribute | JsxSpreadAttribute) {
|
||||
const kind = attribute.kind;
|
||||
const jsxElement = attribute.parent as JsxOpeningLikeElement;
|
||||
const attrsType = getJsxElementAttributesType(jsxElement);
|
||||
|
||||
if (attribute.kind === SyntaxKind.JsxAttribute) {
|
||||
if (!attrsType || isTypeAny(attrsType)) {
|
||||
return undefined;
|
||||
}
|
||||
else {
|
||||
return getTypeOfPropertyOfType(attrsType, attrib.name.text);
|
||||
return getTypeOfPropertyOfType(attrsType, (attribute as JsxAttribute).name.text);
|
||||
}
|
||||
else if (attribute.kind === SyntaxKind.JsxSpreadAttribute) {
|
||||
return attrsType;
|
||||
}
|
||||
|
||||
if (expr.kind === SyntaxKind.JsxSpreadAttribute) {
|
||||
return getJsxElementAttributesType(<JsxOpeningLikeElement>expr.parent);
|
||||
}
|
||||
|
||||
return undefined;
|
||||
Debug.fail(`Expected JsxAttribute or JsxSpreadAttribute, got ts.SyntaxKind[${kind}]`);
|
||||
}
|
||||
|
||||
// Return the contextual type for a given expression node. During overload resolution, a contextual type may temporarily
|
||||
|
@ -7549,8 +7547,10 @@ namespace ts {
|
|||
case SyntaxKind.ParenthesizedExpression:
|
||||
return getContextualType(<ParenthesizedExpression>parent);
|
||||
case SyntaxKind.JsxExpression:
|
||||
return getContextualType(<JsxExpression>parent);
|
||||
case SyntaxKind.JsxAttribute:
|
||||
case SyntaxKind.JsxSpreadAttribute:
|
||||
return getContextualTypeForJsxExpression(<JsxExpression>parent);
|
||||
return getContextualTypeForJsxAttribute(<JsxAttribute | JsxSpreadAttribute>parent);
|
||||
}
|
||||
return undefined;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue