ram64/lib/ram-function.js

Multi-threaded 64bit memory cache database inspired by redis-like features

"use strict";
var _promises = require("fs/promises");
var _hash = require("./util/hash");
class RAMFunction {
    constructor(id, code, fn){
        this.#id = id;
        this.#code = code;
        this.#fn = fn;
    }
    #id;
    #code;
    #fn;
    get id() {
        return this.#id;
    }
    get code() {
        return this.#code;
    }
    get fn() {
        return this.#fn;
    }
    static fromFile(filePath, testCache, testParams) {
        return (0, _promises).readFile(filePath, 'utf8').then((code)=>RAMFunction.fromString(code, testCache, testParams));
    }
    static fromString(code, testCache, testParams) {
        let fnHandler;
        try {
            fnHandler = new Function('cacheObject', 'params', code);
            fnHandler(undefined, undefined);
            fnHandler(undefined, {});
            const frozenCache = {
                value: null
            };
            Object.freeze(frozenCache); // throw (only on strict mode) if input is attempted to mutate
            fnHandler(frozenCache, undefined);
            fnHandler(testCache, testParams);
        } catch (ex) {
            throw new Error(`RAMFunction did not pass validation: ${ex.message}`);
        }
        const id = (0, _hash).getHash(code);
        return new RAMFunction(id, code, fnHandler);
    }
}
exports.RAMFunction = RAMFunction;

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