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feat: Add scientific notation support to isNumeric validator #2464

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feat: Add scientific notation support to isNumeric validator #2464

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205834d
feat: Add scientific notation support to isNumeric validator
VivekHalder Oct 1, 2024
2a7e46a
fix(isNumeric): resolve ESLint template literal spacing issues
VivekHalder Oct 1, 2024
ce77f75
Merge branch 'validatorjs:master' into fix-scientific-notation
VivekHalder Oct 1, 2024
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19 changes: 13 additions & 6 deletions src/lib/isNumeric.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,10 +3,17 @@ import { decimal } from './alpha';

const numericNoSymbols = /^[0-9]+$/;

export default function isNumeric(str, options) {
assertString(str);
if (options && options.no_symbols) {
return numericNoSymbols.test(str);
}
return (new RegExp(`^[+-]?([0-9]*[${(options || {}).locale ? decimal[options.locale] : '.'}])?[0-9]+$`)).test(str);
export default function isNumeric(str, options = { no_symbols: false }) {
assertString(str); // verify if the str is a string, if not report a TypeError

// destructure options to extract the required properties
const { locale, no_symbols } = options;

// deciding the separator upfront (default separator is '.')
const decimalSeparator = locale ? decimal[locale] : '.';

// setting the regex depending on the value of no_symbols
const regex = no_symbols ? numericNoSymbols : `^[+-]?([0-9]*[${decimalSeparator}])?[0-9]+([eE][+-]?[0-9]+)?$`;

return regex.test(str);
}
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