36 lines
911 B
TypeScript
36 lines
911 B
TypeScript
// Repro from #10901
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/**
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* Administrivia: JavaScript primitive types and Date
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*/
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export type Primitive = number | string | boolean | Date;
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/**
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* Administrivia: anything with a valueOf(): number method is comparable, so we allow it in numeric operations
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*/
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interface Numeric {
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valueOf(): number;
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}
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// Not very useful, but meets Numeric
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class NumCoercible {
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public a: number;
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constructor(a: number) {
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this.a = a;
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}
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public valueOf() {
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return this.a;
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}
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}
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/**
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* Return the min and max simultaneously.
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*/
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export function extent<T extends Numeric>(array: Array<T | Primitive>): [T | Primitive, T | Primitive] | [undefined, undefined] {
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return [undefined, undefined];
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}
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let extentMixed: [Primitive | NumCoercible, Primitive | NumCoercible] | [undefined, undefined];
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extentMixed = extent([new NumCoercible(10), 13, '12', true]);
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