arcadia-js-shims

JS language shims used by Arcadia

Just require/import arcadia-js-shims, and the environment will be shimmed.

import 'arcadia-js-shims';

Included shims

• es5-shim
• es5-sham
• es6-shim
• Function.prototype.name
• Array.prototype.includes (ES7/ES2016)
• Object.entries (ES8/ES2017)
• Object.values (ES8/ES2017)
• String.prototype.padStart (ES8/ES2017)
• String.prototype.padEnd (ES8/ES2017)
• Promise.prototype.finally (Stage 4, ES2018)
• Array.prototype.flat (Stage 3, ES2019 candidate)
• Array.prototype.flatMap (Stage 3, ES2019 candidate)
• Symbol.prototype.description (Stage 3, ES2019 candidate)
• String.prototype.matchAll (Stage 3, ES2019 candidate)

Targeting versions

If you do not need to support older browsers, you can pick a subset of ES versions to target. For example, if you don't support pre-ES5 browsers, you can start your shims with ES2015 by requiring/importing the specific target file. This will shim the environment for that version and upward.

import 'arcadia-js-shims/target/es2015';

Included targets

• arcadia-js-shims/target/es5 (default)
• arcadia-js-shims/target/es2015
• arcadia-js-shims/target/es2016
• arcadia-js-shims/target/es2017
• arcadia-js-shims/target/es2018
• arcadia-js-shims/target/es2019