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ECMAScript spec abstract operations.

Every operation is available by edition/year and by name - for example,es-abstract/2020/Call gives you theCall operation from ES2020,es-abstract/5/Type gives you theType operation from ES5.

All abstract operations are also available under anes5/es2015/es2016/es2017/es2018/es2019/es2020/es2021 entry point, and as a property on themain export, but using deep imports is highly encouraged for bundle size and performance reasons. Non-deep entry points will be removed in the next semver-major release.

varES=require('es-abstract');varassert=require('assert');assert(ES.isCallable(function(){}));assert(!ES.isCallable(/a/g));

Simply clone the repo,npm install, and runnpm test

Please email@ljharb or seehttps://tidelift.com/security if you have a potential security vulnerability to report.