mints

minimum typescript compiler (7.6kb, gzip)

Demo https://mints-playground.netlify.app/

Goal

• Lightweight
• Just drop type annotations like :number and transform enum, constructor's public/private/proctected and jsx.
• Fast first compile (use prebuild binary format)
• Support parallel compile

Syntax Limitations

• All statements except those terminated by } require ; (expect prettier format)
• mints tokenizer is unstable for RegExp Literal /.../ yet.
  • / can not parse as RexExp (expect binary divider). use /[ ]....
  • /> can not parse as RegExp (expect jsx)
  • </ can not parse as RegExp (expect jsx)
• Not Support
  • with
  • namespace
  • decorator

How to use

npm install @mizchi/mints --save
yarn add @mizchi/mints

import { transformSync } from "@mizchi/mints";
const out = transformSync(`const x: number = 1;`);

if (!out.error) {
  console.log(out); // parse error object
} else {
  console.log(out.code); // result
}

TODO: add worker mode example

Run with cache

import { transformSync } from "@mizchi/mints";
const cache = new Map();
const out1 = transformSync(`const x: number = 1;const y = 2;`, { cache });

const out2 = transformSync(`const x: number = 1; const y = 3;`, { cache });

cache.clear();

transformSync caches result by each line. In this case, compile only const y = 3; line.

Benchmark

$ yarn bench

--------- 2416chars
[tsc] 58ms
[esbuild] 14ms
[mints] 6ms
[mints_para] 12ms
--------- 2981chars
[tsc] 14ms
[esbuild] 1ms
[mints] 9ms
[mints_para] 12ms
--------- 5118chars
[tsc] 18ms
[esbuild] 1ms
[mints] 12ms
[mints_para] 22ms
--------- 21153chars
[tsc] 55ms
[esbuild] 3ms
[mints] 59ms
[mints_para] 53ms
--------- 18584chars
[tsc] 39ms
[esbuild] 2ms
[mints] 39ms
[mints_para] 32ms
--------- 3844chars
[tsc] 12ms
[esbuild] 1ms
[mints] 9ms
[mints_para] 17ms
--------- 38611chars
[tsc] 72ms
[esbuild] 3ms
[mints] 57ms
[mints_para] 45ms
--------- 6935chars
[tsc] 13ms
[esbuild] 1ms
[mints] 13ms
[mints_para] 7ms

How to develop

# git clone ...
yarn install

cd packages/mints
yarn build
yarn test
yarn bench
yarn test262 # not pass yet

LICENSE

MIT