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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 inparse, and then interpret it ininterperter.

In addition, the interperter of the while statement and for statement in the project is a bit rough.

This project uses node and npm. Go check them out if you don't have them locally installed.

npm i @childrentime/js-interpreter

import{interpreter}from"@childrentime/js-interpreter";constresult=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

You can experience it in real timehere.

Alternatively, you can view its test fileshere.

export{tokenizer,parse,interpreter};constcode='var a = 1;';consttokens:{type:string,value:string|number}[]=tokenizer(code);constast=parse(code);constinterpreter:any[][]=interpreter(code);

MIT © ChildrenTime