Prism Language Transpiler

0.1.6 verified Fri May 01 auth: no javascript

Prism is a small, expressive programming language that transpiles to TypeScript or JavaScript. Current stable version is 0.1.6, released as a work-in-progress. It supports typed variables, functions, classes, pattern matching, and error handling. Differentiator: designed as an alternative language that compiles to JS/TS with modern syntax features. Active development with CLI tools for compile, run, and check.

Common errors

error Error: Cannot find module 'prism-lang' ↓

cause Package not installed or not in node_modules.

fix

Run npm install prism-lang.

error prism: command not found ↓

cause CLI binary not in PATH.

fix

Install globally: npm install -g prism-lang

error SyntaxError: Unexpected token 'pub' ↓

cause Using Prism-specific syntax in JavaScript/TypeScript.

fix

Compile .prism files with the prism CLI before using.

Warnings

gotcha Prism is a work in progress; syntax may change without major version bump. ↓

fix Pin to a specific version and monitor releases for breaking changes.

gotcha Type inference is limited; explicit type annotations may be required in complex expressions. ↓

fix Add explicit type annotations when inference fails.

gotcha CLI requires `npm link` or global install; otherwise commands may not be found. ↓

fix Run `npm install -g prism-lang` or use `npx prism compile`.

Install

npm install prism-lang

yarn add prism-lang

pnpm add prism-lang

Imports

compile
wrong
```
const compile = require('prism-lang')
```
correct
```
import { compile } from 'prism-lang'
```
ESM-only; the package exports functions for programmatic use.

run

wrong

import * as prism from 'prism-lang'; prism.run(...)

correct

import { run } from 'prism-lang'

Named export, not default.

check

wrong

import { check } from 'prism-lang/check'

correct

import { check } from 'prism-lang'

Main entry point; no subpath exports.

Quickstart

Shows basic Prism syntax: immutable/mutable variables, function with type annotations, and output.

// compile.prism
final name: string = "Prism"
mut count: int = 0

fn greet(name: string): string {
  return "Hello, " + name
}

print(greet("World"))

// CLI: prism compile file.prism --js