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Correct the declaration emit for overload implementation if there is single overload signature

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Fixes  #480
This commit is contained in:
Sheetal Nandi
2014-08-22 13:24:57 -07:00
parent 92e3202604
commit 519ef5b383
4 changed files with 41 additions and 1 deletions
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15
src/compiler/checker.ts
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@@ -7093,7 +7093,20 @@ module ts {
function isImplementationOfOverload(node: FunctionDeclaration) {
if (node.body) {
var symbol = getSymbolOfNode(node);
return getSignaturesOfSymbol(symbol).length > 1;
var signaturesOfSymbol = getSignaturesOfSymbol(symbol);
// If this function body corresponds to function with multiple signature, it is implementation of overload
// eg: function foo(a: string): string;
// function foo(a: number): number;
// function foo(a: any) { // This is implementation of the overloads
// return a;
// }
return signaturesOfSymbol.length > 1 ||
// If there is single signature for the symbol, it is overload if that signature isnt coming from the node
// eg: function foo(a: string): string;
// function foo(a: any) { // This is implementation of the overloads
// return a;
// }
(signaturesOfSymbol.length === 1 && signaturesOfSymbol[0].declaration !== node);
}
return false;
}