dinoloop-es8/modules/utility/function.utility.js

A lightweight REST API Library for building scalable Node.js server-side applications powered by Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const data_utility_1 = require("./data.utility");
let STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
let ARGUMENT_NAMES = /([^\s,]+)/g;
// returns only param names as string array
// refer: https://stackoverflow.com/questions/1007981/how-to-get-function-parameter-names-values-dynamically
class FunctionUtility {
    static getParamNames(func) {
        if (data_utility_1.DataUtility.isUndefinedOrNull(func))
            return [];
        let fnStr = func.toString().replace(STRIP_COMMENTS, '');
        let result = fnStr.slice(fnStr.indexOf('(') + 1, fnStr.indexOf(')')).match(ARGUMENT_NAMES);
        if (result === null) {
            result = [];
        }
        return result;
    }
}
exports.FunctionUtility = FunctionUtility;
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