Ts2nim NPM | npm.io

ts2nim

npm: total downloads Types Dep license

Typescript to Nim transpiler

It also can translate js code with the Nim type auto as typescript-estree compatible with the js estree.

It identified the .d.ts file if the ast node is TSMethodSignature it will add importcpp pragma to translated proc, so it could be used as a wrapper generator.

Motivation

Transpile nodejs modules, write in Typescript and transpile it to Nim, expand the Nim-Javascript backend ecosystem and so on.

Current goal is translating Typescript syntax into valid and pretty looking nim code. you may manually modify nim sources after translation. it just translate source code exclude dependency,even modules in nodejs std.

demo transpiled project:
vscode-uri

It can be easy to translate library processes like string manipulation, images, bytes and all these things.

RoadMap

This project has two routes
1. Generate nim js bridge through typescript type difinition file.
2. Generate nim source code through typescript source file.

Todos

Inferring js type (object or others)
Inferring native type (eg. number is int or float)

Limitations

assemblyscript basics described well, share same theory.

Installation

npm i ts2nim or
yarn add ts2nim

Usage

ts2nim -i inputFileOrDir -o outFileOrDir

without param it will transpile current directory in place with extension .nim

Translation

origin	to	description
number	float
boolean	bool
interface,type,class	type
Example()	newExample()	constructor for a class
let,var,const	var	const no-object -> const,others var
this	self
null,undefinded	nil
optinal param	none(T)	options module
T\|null,T\|undefinded	T	ref type
RestElement param	openArrayT
switch	case of
Array	seq
StringTemplate	fmt	strformat module
do while	doWhile	doWhile template
raise new T()	raise newException(T)
.length	.len
.push	.add
fs.readFileSync	readFile	os module
path.join	/	os module
.some	.any	sequtils module
.sort	.sorted	algorithm module
async	{.async.}	asyncdispatch or asyncjs module
===	==
!==	!=
&&	and
\|\|	or
!	not
+	& or +	depends on a literal string or number found
delete	assign to nil
extends A,B	ref object of A,B	Multiple Inheritance not supported in Nim