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