A very simple (stupid?) rule "engine"/rule evaluator that allows you to write rules, in JavaScript, to evaluate whether a rule should be matched based on the two objects and an optional parameter is given.
This is meant to be extremely light-weight and simple, and you should trust that whatever rules that was fed into the "engine" does not have malicious code. READ: Do NOT use this directly if the rules are written by your users! (Unless you built a UI on top of this, of course.)
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Include rule.js in your code
var Rule = require('rule'); -
Create a new Rule with a name and JavaScript statements.
var rule = new Rule('rule-name', 'return data.name === "hello world";');In order for rule engine to work, the statement MUST return a true value should the rule is considered a match. (Not truthy, but a boolean true.)
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Execute the rule by passing in the data you wanted to use to compare.
var result = rule.isMatch({ name: "hello world", garbage: "data" });