esfive

library0.1.1jsnpmunverified

ESFive is a minimal ES5-to-ES3 transpiler, version 0.1.1, last updated in 2012. It converts ECMAScript 5 constructs (like Object.create, Array.isArray, property descriptors, strict mode) into ES3-compatible code. Release cadence is unknown and appears dormant. Key differentiator: very early attempt at ES5-to-ES3 transpilation, now obsolete due to modern transpilers like Babel.

npm install esfive

github ↗package ↗

INSTALL

IMPORT

SIG · ESFIVE

esfive

javascriptv0.1.1

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.

default

✓ var esfive = require('esfive');

✗ import esfive from 'esfive';

No ES6 module support; CommonJS only.

compile

✓ var result = esfive.compile('...');

✗ esfive.compile() with wrong arguments

Main API function; accepts ES5 source string, returns object with 'code' property.

compileFile

✓ var result = esfive.compileFile('file.js');

✗ esfive.compileFile with non-string path

Reads file and transpiles; callback not supported.

Transpile a simple ES5 property definition to ES3.

var esfive = require('esfive'); var input = 'Object.defineProperty(o, "p", {value: 1});'; var output = esfive.compile(input); console.log(output.code);

Debug

Known issues

deprecatedThis package is unmaintained since 2012 and not recommended for new projects.

fix

Use Babel or another modern transpiler.

affects: all

gotchaDoes not convert all ES5 features (e.g., getters/setters, ES6).

fix

Check the source for supported features.

affects: all

gotchaCompiled output may not fully preserve semantics of ES5 strict mode.

fix

Review output for correctness.

affects: all

Errors

Common errors & fixes

Cannot find module 'esfive'

Package not installed or missing.

fix

Run 'npm install esfive'.

Object.defineProperty is not a function

Output not run in an ES5 environment; requires polyfill.

fix

Use an ES5 shim or ensure ES5+ runtime.

Upgrade

Version history

0.1.1latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/asmblah/esfive ↗

packagehttps://www.npmjs.com/package/esfive ↗