lichenscript

library0.6.3jsnpmunverified

LichenScript is a statically typed language compiler that targets JavaScript and C, version 0.6.3. It offers modern syntax similar to TypeScript/JavaScript, pattern matching, and AOT compilation to C for fast cold start and portability (WebAssembly/Mobile). Its JavaScript target produces readable code with small overhead. It is designed for easy integration with the web ecosystem, providing a lightweight alternative to TypeScript for isolated environments. Active development with monthly releases.

devops

npm install lichenscript

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · LICHENSCRIPT

lichenscript

devopsjavascriptv0.6.3

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

default

✓ import lichenscript from 'lichenscript'

✗ const lichenscript = require('lichenscript')

ESM-only since v0.6; no CommonJS support.

compile

✓ import { compile } from 'lichenscript'

✗ import compile from 'lichenscript/lib/compile'

Named export; do not use relative paths.

LichenScript

✓ import { LichenScript } from 'lichenscript'

✗ import { LichenScript } from 'lichenscript/lib/core'

Type is exported; use from main entry.

TokenKind

✓ import { TokenKind } from 'lichenscript'

✗ import { TokenKind } from 'lichenscript/dist/types'

Type export available from root.

Compiles a simple LichenScript program with a function and prints the generated JavaScript code.

import { compile } from 'lichenscript'; const code = ` let greet = (name: string) => { print('Hello, ' + name); }; greet('World'); `; const result = compile(code, { target: 'js' }); console.log(result.code); // Output: "const greet = (name) => { console.log('Hello, ' + name); }; greet('World');"

Debug

Known issues

breakingVersion 0.6.0 dropped CommonJS support (require) in favor of ESM only.

fix

Use import syntax instead of require(). Ensure your runtime supports ES modules.

affects: >=0.6.0

deprecatedThe 'output' option in compile() has been deprecated; use 'target' instead.

fix

Replace { output: 'js' } with { target: 'js' }.

affects: >=0.5.0

gotchaString interpolation uses backticks but with single quotes? Actually, LichenScript uses '+' for concatenation, not template literals.

fix

Use the '+' operator to concatenate strings.

affects: >=0.1.0

gotchaThe C target requires a separate C compiler (e.g., gcc) to produce executables; the compile() function only outputs C source code.

fix

Install a C compiler and run it on the generated .c file.

affects: >=0.1.0

breakingBefore v0.4.0, the function signature for compile was (code, options) but options.target accepted 'javascript' and 'c' strings; changed to 'js' and 'c'.

fix

Update target values from 'javascript' to 'js'.

affects: <0.4.0

Errors

Common errors & fixes

Error: Cannot find module 'lichenscript'

Package not installed or incorrect import path.

fix

Run 'npm install lichenscript' and ensure you are using an ESM project.

TypeError: lichenscript.compile is not a function

Using default import instead of named import for compile.

fix

Use 'import { compile } from 'lichenscript'' instead of 'import lichenscript from 'lichenscript''.

SyntaxError: Unexpected token 'export'

Trying to use ESM import in a CommonJS module.

fix

Set 'type': 'module' in package.json or use .mjs file extension.

Error: Unknown target 'javascript'

Using deprecated target value.

fix

Replace 'javascript' with 'js' in options.target.

Error: Option 'output' is deprecated. Use 'target' instead.

Using deprecated output option.

fix

Use compile(code, { target: 'js' }) instead of compile(code, { output: 'js' }).

Upgrade

Version history

0.6.3latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/lichenscript/lichenscript ↗

packagelichenscript ↗

homepagehttps://lichenscript.com/ ↗