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62 lines
1006 B
JavaScript
62 lines
1006 B
JavaScript
'use strict';
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var BEEP_DELAY = 500;
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if (!process.stdout.isTTY ||
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process.argv.indexOf('--no-beep') !== -1 ||
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process.argv.indexOf('--beep=false') !== -1) {
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module.exports = function () {};
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return;
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}
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function beep() {
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process.stdout.write('\u0007');
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}
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function melodicalBeep(val, cb) {
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if (val.length === 0) {
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cb();
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return;
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}
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setTimeout(function () {
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if (val.shift() === '*') {
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beep();
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}
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melodicalBeep(val, cb);
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}, BEEP_DELAY);
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}
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module.exports = function (val, cb) {
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cb = cb || function () {};
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if (val === parseInt(val)) {
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if (val < 0) {
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throw new TypeError('Negative numbers are not accepted');
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}
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if (val === 0) {
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cb();
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return;
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}
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for (var i = 0; i < val; i++) {
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setTimeout(function (i) {
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beep();
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if (i === val - 1) {
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cb();
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}
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}, BEEP_DELAY * i, i);
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}
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} else if (!val) {
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beep();
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cb();
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} else if (typeof val === 'string') {
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melodicalBeep(val.split(''), cb);
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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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