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29 lines
695 B
29 lines
695 B
'use strict'; |
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/** |
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* `input` type prompt |
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*/ |
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var Input = require('./input'); |
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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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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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let 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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module.exports = NumberPrompt;
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