27 lines
652 B
TypeScript
27 lines
652 B
TypeScript
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import fs from 'fs';
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import {fileURLToPath} from 'url';
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export function isMainModule(moduleUrl: string): boolean {
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const entrypoint = process.argv[1];
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if (!entrypoint || entrypoint === '-') {
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return false;
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}
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let entrypointPath: string;
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try {
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entrypointPath = fs.realpathSync(entrypoint);
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} catch (error) {
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if (
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error instanceof Error &&
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'code' in error &&
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(error.code === 'ENOENT' || error.code === 'ENOTDIR')
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) {
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return false;
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}
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throw error;
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}
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// Resolve both paths for runtimes using --preserve-symlinks-main.
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return entrypointPath === fs.realpathSync(fileURLToPath(moduleUrl));
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}
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