1.2.0 • Published 6 months ago
regexp-build v1.2.0
RegExp Build
Build and join RegExp for JavaScript and TypeScript.
Installation
npm install regexp-build
Using
import { find, optional } from 'regexp-build';
// /[-+]?\d/
const regex = find([optional(/[-+]/), /\d/]);Functions
| Function | Regex | Description |
|---|---|---|
| build(....,.....) | /.../ | Build RegEexp from parts |
| regex(...) | /.../ | Join many RegExp to one |
| find(...) | /.../ | Create RegExp for find |
| pattern(...) | /^...$/ | Create RegExp for match string |
| group(...) | /(...) / | Create RegExp group |
| group(..., name) | /(?...)/ | Create RegExp group with name |
| zeroOrMore(...) | /(...)*/ | Create zero or more repeat RegExp |
| oneOrMore(...) | /(...)+/ | Create one or more repeat RegExp |
| optional(...) | /(...)?/ | Create optional RegExp |
| repeat(..., count) | /(...){count}/ | Create n repeat RegExp |
| choiceOf(..., ...) | /(...|...)/ | Create RegExp for select one |
| lookahead(...) | /(?=...)/ | Create look a head RegExp |
| negativeLookhead(...) | /(!=...)/ | Create negative look a head RegExp |
| lookbehind(...) | /(?<=...)/ | Create look behind RegExp |
| negativeLookbehind(...) | /(?<!...)/ | Create negative look behind RegExp |
Example
import { choiceOf, pattern, zeroOrMore, build } from 'regexp-build';
const domain = /\w+\.[a-z]{3}/;
// /http|https/
const protocol = choiceOf(/http/, /https/);
// /^(?:http|https):\/\/(?:\w+\.)*\w+\.[a-z]{3}$/
const url = pattern([protocol, /:\/\//, zeroOrMore(/\w+\./), domain]);
// /^\w+@\w+\.[a-z]{3}$/
const email = pattern([/\w+@/, domain]);
// /-(?:[1-9]\d+):(?:\w+)-/
const x = build('-{0}:{1}-', /[1-9]\d+/, /\w+/)