mirror of
https://github.com/angular/angular
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36 lines
1.3 KiB
TypeScript
36 lines
1.3 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC 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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* Verify that all functions in the output have a unique name.
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* @param output Compiler output.
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* @param functionNamePattern Only match function whose names match this pattern.
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* Will be converted into a regular expression.
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* @param expectedCount Expected number of functions.
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*/
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export function verifyUniqueFunctions(
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output: string,
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functionNamePattern?: string,
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expectedCount?: number,
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): boolean {
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const pattern = functionNamePattern ? new RegExp(functionNamePattern) : null;
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const allTemplateFunctionsNames = (output.match(/function ([^\s(]+)/g) || [])
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.map((match) => match.slice(9))
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.filter((name) => !pattern || pattern.test(name));
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const uniqueTemplateFunctionNames = new Set(allTemplateFunctionsNames);
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const lengthMatches = allTemplateFunctionsNames.length === uniqueTemplateFunctionNames.size;
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const expectedCountMatches =
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expectedCount == null
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? allTemplateFunctionsNames.length > 0
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: allTemplateFunctionsNames.length === expectedCount;
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return (
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lengthMatches &&
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expectedCountMatches &&
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allTemplateFunctionsNames.every((name) => uniqueTemplateFunctionNames.has(name))
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);
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}
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