27 lines
668 B
JavaScript
27 lines
668 B
JavaScript
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/**
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* `input` type prompt
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*/
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import Input from './input.js';
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/**
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* Extention of the Input prompt specifically for use with number inputs.
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*/
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export default class NumberPrompt extends Input {
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filterInput(input) {
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if (input && typeof input === 'string') {
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input = input.trim();
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// Match a number in the input
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const numberMatch = input.match(/(^-?\d+|^-?\d+\.\d*|^\d*\.\d+)(e\d+)?$/);
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// If a number is found, return that input.
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if (numberMatch) {
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return Number(numberMatch[0]);
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}
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}
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// If the input was invalid return the default value.
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return this.opt.default == null ? NaN : this.opt.default;
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}
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}
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