38 lines
1 KiB
TypeScript
38 lines
1 KiB
TypeScript
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// ok - overload signatures are assignment compatible with their implementation
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class Accessor {}
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function attr(name: string): string;
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function attr(name: string, value: string): Accessor;
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function attr(map: any): Accessor;
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function attr(nameOrMap: any, value?: string): any {
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if (nameOrMap && typeof nameOrMap === "object") {
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// handle map case
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return new Accessor;
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}
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else {
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// handle string case
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return "s";
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}
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}
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// not ok - there's an assignment compat error
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function attr2(name: string): string;
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function attr2(name: string, value: string): Accessor;
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function attr2(map: any): Accessor;
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function attr2(nameOrMap: any, value?: string): string {
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if (nameOrMap && typeof nameOrMap === "object") {
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// handle map case
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return "t";
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}
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else {
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// handle string case
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return "s";
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}
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}
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// error - signatures are not assignment compatible
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function foo():number;
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function foo():string { return "a" };
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