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tsserver.js fails to run on node v5.4.1. "TypeError: this is not a typed array" at Buffer.from #25652

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@minestarks

This means the TypeScript 3.0 language service doesn't work at all in the current version of Dev15

TypeScript Version: 3.0
Node version: v5.4.1

Just install VS 15.7 or node <v6 and run tsserver.js:

> C:\vs\d15.7\Web\External\x86\node.exe -v
v5.4.1

> C:\vs\d15.7\Web\External\x86\node.exe "C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js"
C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js:119888
                    var buf = Buffer.from ? Buffer.from(s) : new Buffer(s);
                                                   ^

TypeError: this is not a typed array.
    at Function.from (native)
    at Logger.write (C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js:119888:52)
    at Logger.msg (C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js:119874:22)
    at Logger.info (C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js:119847:22)
    at ts.server.ts.server (C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js:120548:16)
    at ts (C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js:120561:7)
    at Object.<anonymous> (C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.0\tsserver.js:120562:3)
    at Module._compile (module.js:397:26)
    at Object.Module._extensions..js (module.js:404:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Function.Module.runMain (module.js:429:10)
    at startup (node.js:139:18)
    at node.js:999:3

CC @mhegazy

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