All files / src/lib get-parameter-names.ts

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/**
 * Original from https://github.com/goatslacker/get-parameter-names/blob/master/index.js
 */
 
const COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
const DEFAULT_PARAMS = /=[^,]+/mg;
const FAT_ARROWS = /=>.*$/mg;
 
export function getParameterNames(fn: Function): string[] {
    const code = fn.toString()
        .replace(COMMENTS, '')
        .replace(FAT_ARROWS, '')
        .replace(DEFAULT_PARAMS, '');
 
    const result = code.slice(code.indexOf('(') + 1, code.indexOf(')'))
        .match(/([^\s,]+)/g);
 
    return result === null ? [] : result;
}