ESFive

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library 0.1.1 ·javascript deprecated
verified May 1, 2026

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.

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