ECMAScript 6 compatibility table
V8 SpiderMonkey JavaScriptCore Chakra Carakan KJS Other ⬤ Minor difference (1 point) ⬤ Small feature (2 points) ⬤ Medium feature (4 points) ⬤ Large feature (8 points) Compilers/polyfills Desktop browsers Servers/runtimes Mobile Feature name Current browser ES6 Trans- piler Traceur Babel 6 + core-js 2 Babel 7 + core-js 2 Babel 7 + core-js 3 Closure 2020.09 Closure 2021.08 Closure 2021.09 Closure 20
ECMAScript 5 compatibility table
V8 SpiderMonkey JavaScriptCore Chakra Carakan KJS Other ⬤ Minor difference (1 point) ⬤ Small feature (2 points) ⬤ Medium feature (4 points) ⬤ Large feature (8 points) Compilers/polyfills Desktop browsers Servers/runtimes Mobile Feature name Current browser es5-shim Konq 4.13 Konq 4.14[1] IE 8 IE 9 IE 10 IE 11 FF 91 ESR FF 102 ESR FF 103 FF 104 FF 105 FF 106 FF 107 FF 108 FF 109 FF 110 FF 111 FF 11
ECMAScript 6 compatibility table
V8 SpiderMonkey JavaScriptCore Chakra Carakan KJS Other ⬤ Minor difference (1 point) ⬤ Small feature (2 points) ⬤ Medium feature (4 points) ⬤ Large feature (8 points) Compilers/polyfills Desktop browsers Servers/runtimes Mobile Feature name Current browser ES6 Trans- piler Traceur Babel 6 + core-js 2 Babel 7 + core-js 2 Babel 7 + core-js 3 Closure 2020.06 Closure 2020.09 Closure 2021.08 Closure 20
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