| 1 | const pkg = require('../package');
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| 2 |
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| 3 | function isFlag(arg) {
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| 4 | return arg[0] === '-' ||
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| 5 | arg.slice(0, 2) === '--';
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| 6 | }
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| 7 |
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| 8 | module.exports = arg => {
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| 9 | if (isFlag(arg) === false) {
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| 10 | return;
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| 11 | }
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| 12 | const error = new RangeError(`unknown flags: ${arg}`);
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| 13 | error.type = pkg.name;
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| 14 | throw error;
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| 15 | };
|