second commit

node_modules/@pkgjs/parseargs/examples/negate.js

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+'use strict';
+
+// This example is used in the documentation.
+
+// How might I add my own support for --no-foo?
+
+// 1. const { parseArgs } = require('node:util'); // from node
+// 2. const { parseArgs } = require('@pkgjs/parseargs'); // from package
+const { parseArgs } = require('..'); // in repo
+
+const options = {
+  'color': { type: 'boolean' },
+  'no-color': { type: 'boolean' },
+  'logfile': { type: 'string' },
+  'no-logfile': { type: 'boolean' },
+};
+const { values, tokens } = parseArgs({ options, tokens: true });
+
+// Reprocess the option tokens and overwrite the returned values.
+tokens
+  .filter((token) => token.kind === 'option')
+  .forEach((token) => {
+    if (token.name.startsWith('no-')) {
+      // Store foo:false for --no-foo
+      const positiveName = token.name.slice(3);
+      values[positiveName] = false;
+      delete values[token.name];
+    } else {
+      // Resave value so last one wins if both --foo and --no-foo.
+      values[token.name] = token.value ?? true;
+    }
+  });
+
+const color = values.color;
+const logfile = values.logfile ?? 'default.log';
+
+console.log({ logfile, color });
+
+// Try the following:
+//    node negate.js
+//    node negate.js --no-logfile --no-color
+//    negate.js --logfile=test.log --color
+//    node negate.js --no-logfile --logfile=test.log --color --no-color