23 lines
701 B
TypeScript
23 lines
701 B
TypeScript
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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/**
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* Must use this method for CD (instead of === ) since NaN !== NaN
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*/
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export function isDifferent(a: any, b: any): boolean {
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// NaN is the only value that is not equal to itself so the first
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// test checks if both a and b are not NaN
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return !(a !== a && b !== b) && a !== b;
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}
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export function stringify(value: any): string {
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if (typeof value == 'function') return value.name || value;
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if (typeof value == 'string') return value;
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if (value == null) return '';
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return '' + value;
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}
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