tsminifier

library4.1.0-dev.1jsnpmunverified

TsMinifier is a TypeScript minifier that provides identifier mangling and whitespace removal, targeting TypeScript source files directly. Version 4.1.0-dev.1 is a development release. It differs from general minifiers by operating on TypeScript syntax rather than transpiled JavaScript, and it integrates as a transform plugin for the ts2js compiler. The package ships TypeScript type definitions. It has a small focus compared to full-featured minifiers like Terser, but offers simplicity for TypeScript-specific minification.

devops

npm install tsminifier

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · TSMINIFIER

tsminifier

devopsjavascriptv4.1.0-dev.1

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.

minify

✓ import { minify } from 'tsminifier'

Named export for the main minify function.

MinifyOptions

✓ import { MinifyOptions } from 'tsminifier'

✗ import MinifyOptions from 'tsminifier'

Type export, not default.

default

✓ import TsMinifier from 'tsminifier'

✗ const TsMinifier = require('tsminifier').default

Package has a default export (the class/function) but named exports are preferred. In CommonJS, use require('tsminifier').default.

Demonstrates basic usage of the minify function to minify a TypeScript file with identifier mangling and whitespace removal.

import { minify } from 'tsminifier'; import { readFileSync, writeFileSync } from 'fs'; const code = readFileSync('input.ts', 'utf8'); const result = minify(code, { mangleIdentifiers: true, removeWhitespace: true }); if (result.error) { console.error('Minification error:', result.error); } else { writeFileSync('output.ts', result.code, 'utf8'); }

Debug

Known issues

breakingIn version 4.0.0, the minify function signature changed; it no longer accepts a string as first argument without options object.

fix

Update calls to pass an options object as the second argument: minify(code, { mangleIdentifiers: true })

affects: >=4.0.0 <4.1.0

deprecatedThe 'transform' export used for ts2js plugin is deprecated since version 3.5.0.

fix

Use the new plugin system via '@toddthomson/ts2js-transform-minify' instead.

affects: >=3.5.0 <4.0.0

gotchaIdentifier mangling can break TypeScript code that relies on string-based property access (e.g., obj['property']) or Reflect calls.

fix

Set mangleIdentifiers: false or use a reserved property list.

affects: >=1.0.0

deprecatedThe package's main entry point changed from 'index.js' to 'dist/index.js' in version 3.0.0.

fix

Ensure your import path references 'tsminifier' not 'tsminifier/index.js'.

affects: >=3.0.0 <4.0.0

gotchaThe minifier outputs TypeScript code, not JavaScript. It does not transpile TypeScript to JavaScript.

fix

Use a separate TypeScript compiler (e.g., tsc) after minification if you need JavaScript output.

affects: >=1.0.0

breakingVersion 2.0.0 removed support for Node.js versions below 8.

fix

Upgrade Node.js to version 14 or above as per current requirements.

affects: >=2.0.0

Errors

Common errors & fixes

TypeError: tsminifier.minify is not a function

Importing the package incorrectly (e.g., default import when named export needed).

fix

Use named import: import { minify } from 'tsminifier'

Cannot find module 'tsminifier'

Package not installed or incorrect import path.

fix

Run: npm install tsminifier@latest

SyntaxError: Unexpected token in TypeScript source

The input contains unsupported TypeScript syntax (e.g., decorators, JSX).

fix

Transpile to ES2015+ first or avoid using unsupported syntax.

error TS2300: Duplicate identifier 'x'

Identifier mangling created conflicting names in the same scope.

fix

Set mangleIdentifiers: false or increase the mangling scope.

Upgrade

Version history

4.1.0-dev.1latest on npm

Audit

Dependencies

typescriptoptionalRequired for parsing and manipulating TypeScript AST; the minifier works directly on TypeScript syntax.

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/toddthomson/tsminifier ↗

packagetsminifier ↗

homepagehttps://github.com/toddthomson/tsminifier ↗