syntax: add es6

Author: isRuslan

ftdetect/es6.vim

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+" set all `es6` extensions to javascript
+au BufRead,BufNewFile *.{es6,es6.js} filetype=javascript   

syntax/es6/es6-promise.vim

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+syntax keyword javascriptGlobal Promise nextgroup=javascriptGlobalPromiseDot,javascriptFuncCallArg
+syntax match   javascriptGlobalPromiseDot /\./ contained nextgroup=javascriptPromiseStaticMethod
+syntax keyword javascriptPromiseStaticMethod contained resolve reject all race nextgroup=javascriptFuncCallArg
+if exists("did_javascript_hilink") | HiLink javascriptPromiseStaticMethod Keyword
+endif
+syntax keyword javascriptPromiseMethod contained then catch nextgroup=javascriptFuncCallArg
+syntax cluster props add=javascriptPromiseMethod
+if exists("did_javascript_hilink") | HiLink javascriptPromiseMethod Keyword
+endif

syntax/es6/es6-proxy.vim

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+syntax keyword javascriptGlobal Proxy
+syntax keyword javascriptProxyAPI contained getOwnPropertyDescriptor getOwnPropertyNames
+syntax keyword javascriptProxyAPI contained defineProperty deleteProperty freeze seal
+syntax keyword javascriptProxyAPI contained preventExtensions has hasOwn get set enumerate
+syntax keyword javascriptProxyAPI contained iterate ownKeys apply construct
+if exists("did_javascript_hilink") | HiLink javascriptProxyAPI Keyword
+endif

syntax/es6/es6-regexp.vim

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+syntax keyword javascriptGlobal RegExp nextgroup=javascriptGlobalRegExpDot,javascriptFuncCallArg
+syntax match   javascriptGlobalRegExpDot /\./ contained nextgroup=javascriptRegExpStaticProp
+syntax keyword javascriptRegExpStaticProp contained lastIndex
+if exists("did_javascript_hilink") | HiLink javascriptRegExpStaticProp Keyword
+endif
+syntax keyword javascriptRegExpProp contained global ignoreCase multiline source sticky
+syntax cluster props add=javascriptRegExpProp
+if exists("did_javascript_hilink") | HiLink javascriptRegExpProp Keyword
+endif
+syntax keyword javascriptRegExpMethod contained exec test nextgroup=javascriptFuncCallArg
+syntax cluster props add=javascriptRegExpMethod
+if exists("did_javascript_hilink") | HiLink javascriptRegExpMethod Keyword
+endif

syntax/es6/es6-set.vim

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+syntax keyword javascriptGlobal Set WeakSet
+syntax keyword javascriptES6SetProp contained size
+syntax cluster props add=javascriptES6SetProp
+if exists("did_javascript_hilink") | HiLink javascriptES6SetProp Keyword
+endif
+syntax keyword javascriptES6SetMethod contained add clear delete entries forEach has nextgroup=javascriptFuncCallArg
+syntax keyword javascriptES6SetMethod contained values nextgroup=javascriptFuncCallArg
+syntax cluster props add=javascriptES6SetMethod
+if exists("did_javascript_hilink") | HiLink javascriptES6SetMethod Keyword
+endif

syntax/es6/es6-string.vim

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+syntax keyword javascriptGlobal String nextgroup=javascriptGlobalStringDot,javascriptFuncCallArg
+syntax match   javascriptGlobalStringDot /\./ contained nextgroup=javascriptStringStaticMethod
+syntax keyword javascriptStringStaticMethod contained fromCharCode fromCodePoint nextgroup=javascriptFuncCallArg
+if exists("did_javascript_hilink") | HiLink javascriptStringStaticMethod Keyword
+endif
+syntax keyword javascriptStringMethod contained anchor charAt charCodeAt codePointAt nextgroup=javascriptFuncCallArg
+syntax keyword javascriptStringMethod contained concat endsWith includes indexOf lastIndexOf nextgroup=javascriptFuncCallArg
+syntax keyword javascriptStringMethod contained link localeCompare match normalize nextgroup=javascriptFuncCallArg
+syntax keyword javascriptStringMethod contained repeat replace search slice split nextgroup=javascriptFuncCallArg
+syntax keyword javascriptStringMethod contained startsWith substr substring toLocaleLowerCase nextgroup=javascriptFuncCallArg
+syntax keyword javascriptStringMethod contained toLocaleUpperCase toLowerCase toString nextgroup=javascriptFuncCallArg
+syntax keyword javascriptStringMethod contained toUpperCase trim valueOf nextgroup=javascriptFuncCallArg
+syntax cluster props add=javascriptStringMethod
+if exists("did_javascript_hilink") | HiLink javascriptStringMethod Keyword
+endif

syntax/es6/es6-symbol.vim

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+syntax keyword javascriptGlobal Symbol nextgroup=javascriptGlobalSymbolDot,javascriptFuncCallArg
+syntax match   javascriptGlobalSymbolDot /\./ contained nextgroup=javascriptSymbolStaticProp,javascriptSymbolStaticMethod
+syntax keyword javascriptSymbolStaticProp contained create hasInstance isConcatSpreadable
+syntax keyword javascriptSymbolStaticProp contained isRegExp iterator toPrimitive
+syntax keyword javascriptSymbolStaticProp contained toStringTag unscopables
+if exists("did_javascript_hilink") | HiLink javascriptSymbolStaticProp Keyword
+endif
+syntax keyword javascriptSymbolStaticMethod contained for keyFor nextgroup=javascriptFuncCallArg
+if exists("did_javascript_hilink") | HiLink javascriptSymbolStaticMethod Keyword
+endif