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44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
8 months ago
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'use strict';
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// This example is used in the documentation.
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// How might I add my own support for --no-foo?
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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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'color': { type: 'boolean' },
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'no-color': { type: 'boolean' },
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'logfile': { type: 'string' },
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'no-logfile': { type: 'boolean' },
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};
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const { values, tokens } = parseArgs({ options, tokens: true });
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// Reprocess the option tokens and overwrite the returned values.
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tokens
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.filter((token) => token.kind === 'option')
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.forEach((token) => {
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if (token.name.startsWith('no-')) {
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// Store foo:false for --no-foo
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const positiveName = token.name.slice(3);
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values[positiveName] = false;
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delete values[token.name];
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} else {
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// Resave value so last one wins if both --foo and --no-foo.
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values[token.name] = token.value ?? true;
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}
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});
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const color = values.color;
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const logfile = values.logfile ?? 'default.log';
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console.log({ logfile, color });
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// Try the following:
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// node negate.js
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// node negate.js --no-logfile --no-color
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// negate.js --logfile=test.log --color
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// node negate.js --no-logfile --logfile=test.log --color --no-color
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