@childrentime/js-interpreter
v1.0.9
Published
This project is about to implement a simple javascript parser and visualize the ast
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js-interpreter
Background
This project is my graduation project, the main purpose is to implement a simple javascript interpreter.
But maybe it's a good example for you to learn how to write a javascript interpreter because I try to finish it with minimal code.
If you want to add new syntax support, in general, you need to add parsing of the syntax expression in parse, and then interpret it in interperter.
In addition, the interperter of the while statement and for statement in the project is a bit rough.
Install
This project uses node and npm. Go check them out if you don't have them locally installed.
npm i @childrentime/js-interpreter
Usage
import { interpreter } from "@childrentime/js-interpreter";
const result = interpreter(`var a = 1; console.log(a)`);
console.log(result); // [[1]]
The output of each console statement will be contained in an array so the result is a two-dimensional array
Living Demo
You can experience it in real time here.
test cases
Alternatively, you can view its test files here.
API
export { tokenizer, parse, interpreter };
const code = 'var a = 1;';
const tokens: { type: string, value: string | number }[] = tokenizer(code);
const ast = parse(code);
const interpreter: any[][] = interpreter(code);
License
MIT © ChildrenTime