Kangax 的 ES7 兼容性表格

https://kangax.github.io/compat-table/es2016plus/

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V8 SpiderMonkey JavaScriptCore Chakra 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   Traceur Babel 6 +
core-js		 Closure 2018.11 Type-
Script +
core-js		 es7-shim IE 11 Edge 17 Edge 18 FF 60 ESR FF 63 FF 64 CH 70,
OP 57		 CH 71,
OP 58		 SF 11.1 SF 12 Node >=6.5 <7[2] Node >=8.10 <9[2] Node >=10.13 <11[2] DUK 2.2 GraalVM 1.0[3] iOS 11.3 iOS 12 Samsung 8.2
2016 features
§exponentiation (**) operator   2/3 3/3 3/3 2/3 0/3 0/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 0/3 3/3 3/3 2/3 3/3 3/3 3/3 3/3
§Array.prototype.includes   0/3 3/3 2/3 3/3 2/3 0/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 0/3 3/3 3/3 3/3 3/3
2016 misc
§generator functions can't be used with "new"  [7] Yes   No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes
§generator throw() caught by inner generator  [8] Yes   No No Yes Yes[9] No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes
§strict fn w/ non-strict non-simple params is error[10] Yes   No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes
§nested rest destructuring, declarations  [11] Yes   No Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes
§nested rest destructuring, parameters[12] Yes   No Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes
§Proxy, "enumerate" handler removed  [13] Yes   No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
§Proxy internal calls, Array.prototype.includes Yes   No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes
2017 features
§Object static methods 0/4 4/4 3/4 4/4 3/4 0/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 0/4 4/4 4/4 0/4 4/4 4/4 4/4 4/4
§String padding 0/2 2/2 2/2 2/2 2/2 0/2 2/2 2/2 2/2 2/2 2/2 2/2 2/2 2/2 2/2 0/2 2/2 2/2 0/2 2/2 2/2 2/2 2/2
§trailing commas in function syntax   0/2 2/2 2/2 2/2 0/2 0/2 2/2 2/2 2/2 2/2 2/2 2/2 2/2 2/2 2/2 0/2 2/2 2/2 0/2 2/2 2/2 2/2 2/2
§async functions   3/15 3/15 9/15 8/15 0/15 0/15 15/15 15/15 15/15 15/15 15/15 15/15 15/15 15/15 15/15 0/15 15/15 15/15 0/15 13/15 15/15 15/15 15/15
§shared memory and atomics 0/17 0/17 0/17 0/17 0/17 0/17 0/17 0/17 0/17 0/17 0/17 17/17 17/17 0/17 0/17 0/17 17/17 17/17 0/17 17/17 0/17 0/17 0/17
2017 misc
§Proxy "ownKeys" handler, duplicate keys for non-extensible targets (ES 2017 semantics)  [22] Yes   No No No No No No Yes Yes No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
§RegExp "u" flag, case folding Yes   No No No No No No No No Yes Yes Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes
§arguments.caller removed   Yes   No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes
2017 annex b
§Object.prototype getter/setter methods 0/16 16/16 0/16 16/16 0/16 8/16 14/16 14/16 16/16 16/16 16/16 16/16 16/16 16/16 16/16 10/16 16/16 16/16 16/16 16/16 16/16 16/16 16/16
§Proxy internal calls, getter/setter methods 0/4 0/4 0/4 0/4 0/4 0/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 0/4 4/4 4/4 0/4 4/4 4/4 4/4 4/4
§assignments allowed in for-in head in non-strict mode   Yes   Yes No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
2018 features
§object rest/spread properties 0/2 2/2 1/2 2/2 0/2 0/2 0/2 0/2 2/2 2/2 2/2 2/2 2/2 2/2 2/2 0/2 2/2 2/2 0/2 2/2 2/2 2/2 2/2
§Promise.prototype.finally   0/3 3/3 3/3 3/3 0/3 0/3 0/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 0/3 0/3 3/3 0/3 3/3 3/3 3/3 3/3
§s (dotAll) flag for regular expressions Yes   ? Yes No ? No No No No No No No Yes Yes Yes Yes ? Yes Yes No Yes Yes Yes Yes
§RegExp named capture groups Yes   No Yes No No No No No No No No No Yes Yes Yes Yes No Flag[23] Yes No Yes Yes Yes Flag[23]
§RegExp Lookbehind Assertions Yes   No No No No No No No No No No No Yes Yes No No Flag[23] Yes Yes No Yes No No Yes
§RegExp Unicode Property Escapes Yes   No Yes No No No No No No No No No Yes Yes Yes Yes No Flag[23] Yes No Yes Yes Yes Flag[23]
§Asynchronous Iterators 0/2 2/2 2/2 2/2 0/2 0/2 0/2 0/2 2/2 2/2 2/2 2/2 2/2 0/2 2/2 0/2 0/2 2/2 0/2 2/2 0/2 2/2 2/2
2018 misc
§template literal revision Yes   No No Yes No No No No No Yes Yes Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes
2019 misc
§optional catch binding 0/3 0/3 0/3 3/3 0/3 0/3 0/3 0/3 3/3 3/3 3/3 3/3 3/3 3/3 3/3 0/3 0/3 3/3 0/3 0/3 3/3 3/3 0/3
§Symbol.prototype.description   Yes   No No No No No No No No No Yes Yes Yes Yes No Yes No No No No No No Yes No
§Function.prototype.toString revision   0/7 0/7 0/7 0/7 0/7 1/7 4/7 4/7 7/7 7/7 7/7 7/7 7/7 4/7 4/7 4/7 4/7 7/7 1/7 7/7 4/7 4/7 4/7

[1] Flagged features have to be enabled via --harmony flag

[2] Flagged features have to be enabled via --harmony or --es_staging flag

[3] Executed in Node.js/JVM mode via graalvm/bin/node --jvm.

[4] The feature have to be enabled via "Experimental Javascript features" setting under about:flags

[5] This feature is supported when using Babel with core-js.

[6] This feature is supported when using TypeScript with core-js.

[7] TC39 meeting notes from July 28, 2015.

[8] 'Semantics of yield* in throw case' GitHub issue in ECMA-262 repo.

[9] Requires the downlevelIteration compile option.

[10] TC39 meeting notes from July 29, 2015.

[11] TC39 meeting notes from July 28, 2015.

[12] TC39 meeting notes from July 28, 2015.

[13] 'Normative: Remove [[Enumerate]] and associated reflective capabilities' GitHub Pull Request in ECMA-262 repo.

[14] This feature requires native generators or regenerator-runtime, it's a part of babel-polyfill or babel-runtime.

[15] Flagged features have to be enabled via "Enable experimental Javascript features" setting under about:flags

[16] The feature was temporarily disabled to mitigate the Meltdown and Spectre CPU bugs.

[17] The feature is available only in Firefox Developer Edition and Firefox Nightly builds.

[18] The feature was temporarily disabled to mitigate the Meltdown and Spectre CPU bugs. It can be enabled via javascript.options.shared_memory setting under about:config

[19] The feature was temporarily disabled to mitigate the Meltdown and Spectre CPU bugs.

[20] The feature was temporarily disabled to mitigate the Meltdown and Spectre CPU bugs.

[21] The feature have to be enabled via "Experimental enabled SharedArrayBuffer support in JavaScript." setting under about:flags

[22] The behaviour of the Proxy “ownKeys” handler in presence of duplicate keys has been modified later.

[23] The feature have to be enabled via --js-flags="--harmony" flag

[24] The feature is considered unstable, but can be enabled via --js-flags="--harmony-promise-finally" flag

============== End

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