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Add CLI missing-argument guard #58

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Merged
XhmikosR merged 1 commit into from
Apr 19, 2026
Merged

Add CLI missing-argument guard #58

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5 changes: 5 additions & 0 deletions bin/cli.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,4 +7,9 @@ const getModuleType = require('../index.js');

const filename = process.argv[2];

if (!filename) {
console.error('Usage: module-definition <filename>');
process.exit(1);
}

console.log(getModuleType.sync(filename));
14 changes: 14 additions & 0 deletions test/test.js
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Expand Up @@ -3,8 +3,10 @@
'use strict';

const assert = require('assert').strict;
const childProcess = require('child_process');
const fs = require('fs');
const path = require('path');
const process = require('process');
const memfs = require('memfs');
const unionfs = require('unionfs');
const getModuleType = require('../index.js');
Expand Down Expand Up @@ -142,4 +144,16 @@ describe('module-definition', () => {
assert.equal(getModuleType.fromSource('require.main.require();'), 'commonjs');
});
});

describe('CLI tests', () => {
it('should print usage and exit when filename is missing', () => {
const cliPath = path.resolve(__dirname, '..', 'bin', 'cli.js');
const result = childProcess.spawnSync(process.execPath, [cliPath], {
encoding: 'utf8'
});

assert.equal(result.status, 1);
assert.match(result.stderr, /Usage: module-definition <filename>/);
});
});
});
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