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36 lines
1.0 KiB
JavaScript
36 lines
1.0 KiB
JavaScript
8 months ago
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'use strict';
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// This is an example of using tokens to add a custom behaviour.
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//
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// Require the use of `=` for long options and values by blocking
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// the use of space separated values.
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// So allow `--foo=bar`, and not allow `--foo bar`.
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//
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// Note: this is not a common behaviour, most CLIs allow both forms.
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// 1. const { parseArgs } = require('node:util'); // from node
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// 2. const { parseArgs } = require('@pkgjs/parseargs'); // from package
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const { parseArgs } = require('..'); // in repo
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const options = {
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file: { short: 'f', type: 'string' },
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log: { type: 'string' },
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};
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const { values, tokens } = parseArgs({ options, tokens: true });
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const badToken = tokens.find((token) => token.kind === 'option' &&
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token.value != null &&
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token.rawName.startsWith('--') &&
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!token.inlineValue
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);
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if (badToken) {
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throw new Error(`Option value for '${badToken.rawName}' must be inline, like '${badToken.rawName}=VALUE'`);
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}
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console.log(values);
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// Try the following:
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// node limit-long-syntax.js -f FILE --log=LOG
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// node limit-long-syntax.js --file FILE
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