55 lines
1019 B
JavaScript
55 lines
1019 B
JavaScript
'use strict';
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const delay = require('yoctodelay');
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const BEEP_DELAY = 500;
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function beep() {
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process.stdout.write('\u0007');
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}
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async function melodicalBeep(melody) {
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if (melody.length === 0) {
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return;
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}
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await delay(BEEP_DELAY);
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if (melody.shift() === '*') {
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beep();
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}
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return melodicalBeep(melody);
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}
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module.exports = async countOrMelody => {
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if (
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!process.stdout.isTTY ||
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process.argv.includes('--no-beep') ||
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process.argv.includes('--beep=false')
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) {
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return;
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}
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if (countOrMelody === Number.parseInt(countOrMelody, 10)) {
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if (countOrMelody < 0) {
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throw new TypeError('Negative numbers are not accepted');
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}
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if (countOrMelody === 0) {
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return;
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}
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for (let i = 0; i < countOrMelody; i++) {
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await delay(BEEP_DELAY); // eslint-disable-line no-await-in-loop
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beep();
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}
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} else if (!countOrMelody) {
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beep();
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} else if (typeof countOrMelody === 'string') {
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await melodicalBeep(countOrMelody.split(''));
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} else {
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throw new TypeError('Not an accepted type');
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}
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};
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