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jsmirrors

v1.0.0

Published

4 years ago

Mirrors-based reflection implementation for JavaScript

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0Medium
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jsmirrors

Mirrors-based reflection interface for JavaScript

Originally based on work by Allen Wirfs-Brock

Files:

mirrors.js is the reference implementation of the mirror interfaces; supports reflecting over local objects
doc/interfaces is a specification of the mirror interfaces using an interface description language based on TypeScript with ad hoc extensions for get and set
tests/harness.html runs a bunch of tests on mirrors.js in-browser; only ever tested in Firefox due to Chrome's restrictions on XHR from local file:// pages
tests/testRunner-node.js runs the same tests from the command-line using NodeJS

The reference implementation requires a JavaScript implementation that supports ES5. Neither the interface spec nor the implemenation take into account changes made in ES6 and up.

For an introduction to the principles behind mirror-based reflection, read Mirrors: design principles for meta-level facilites of object-oriented programming languages by Gilad Bracha and David Ungar. See also Allen Wirfs-Brock's tour of the original jsmirrors implementation in his posts on reflection in JavaScript.