80 lines
2 KiB
Plaintext
80 lines
2 KiB
Plaintext
==== tests/cases/compiler/indexTypeCheck.ts (8 errors) ====
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interface Red {
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[n:number]; // ok
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~~~~~~~~~~
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!!! An index signature must have a type annotation.
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[s:string]; // ok
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~~~~~~~~~~
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!!! An index signature must have a type annotation.
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}
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interface Blue {
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[n:number]: any; // ok
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[s:string]: any; // ok
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}
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interface Yellow {
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[n:number]: Red; // ok
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[s:string]: Red; // ok
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}
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interface Orange {
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[n:number]: number; // ok
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~~~~~~~~~~~~~~~~~~~
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!!! Numeric index type 'number' is not assignable to string index type 'string'.
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[s:string]: string; // error
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}
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interface Green {
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[n:number]: Orange; // error
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~~~~~~~~~~~~~~~~~~~
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!!! Numeric index type 'Orange' is not assignable to string index type 'Yellow'.
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[s:string]: Yellow; // ok
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}
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interface Cyan {
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[n:number]: number; // error
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~~~~~~~~~~~~~~~~~~~
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!!! Numeric index type 'number' is not assignable to string index type 'string'.
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[s:string]: string; // ok
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}
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interface Purple {
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[n:number, s:string]; // error
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~
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!!! An index signature must have exactly one parameter.
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}
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interface Magenta {
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[p:Purple]; // error
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~
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!!! An index signature parameter type must be 'string' or 'number'.
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}
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var yellow: Yellow;
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var blue: Blue;
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var s = "some string";
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yellow[5]; // ok
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yellow["hue"]; // ok
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yellow[<any>{}]; // ok
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s[0]; // error
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s["s"]; // ok
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s[<any>{}]; // ok
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yellow[blue]; // error
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~~~~~~~~~~~~
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!!! An index expression argument must be of type 'string', 'number', or 'any'.
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var x:number[];
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x[0];
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class Benchmark {
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public results: { [x:string]: any; } = <{ [x:string]: any; }>{};
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public addTimingFor(name: string, timing: number) {
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this.results[name] = this.results[name];
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}
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} |