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30 lines
726 B
30 lines
726 B
export function checkedIndexOf<T>( |
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o: T | number, |
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arr: T[], |
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type: string = "object" |
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): number { |
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let idx: number; |
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if (typeof o === "number") { |
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idx = o; |
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} else if (typeof (o as any).id === "number") { |
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idx = (o as any).id; |
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} else { |
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idx = arr.indexOf(o); |
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} |
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if (idx < 0 || idx > arr.length) { |
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throw new Error(`Invalid ${type} specified: ${o}`); |
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} |
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return idx; |
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} |
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|
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export function getRandomId() { |
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return Math.floor(Math.random() * 1000000000); |
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} |
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export function applyMixins(derivedCtor: any, baseCtors: any[]) { |
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baseCtors.forEach(baseCtor => { |
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Object.getOwnPropertyNames(baseCtor.prototype).forEach(name => { |
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derivedCtor.prototype[name] = baseCtor.prototype[name]; |
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}); |
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}); |
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}
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