io.js 東京Node学園 15時限目

io.js 東京Node学園の15時限目の資料です。

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1. io.js !ZPTVLF@GVSVLBXB
   ౦ژ/PEFֶԂ
   ࣌ݶ໨ࢿྉ
2. !ZPTVLF@GVSVLBXB
   /PEFKT೔ຊϢʔβʔάϧʔϓ୅ද%F/"ॴଐ
3. վΊ…
4. !ZPTVLF@GVSVLBXB
   /PEFJPKT೔ຊϢʔβʔάϧʔϓ୅ද%F/"ॴଐ
5. io.jsͱ͸Կ͔
6. Node.jsͷ friendly fork
7. friendly fork?? લ͸sporkͬͯॻ͍ͯ͋ͬͨ
8. fork
9. spork
10. spork fork͸͢Δ͚ͲɺϑΥʔΫ΄Ͳઌ͕Θ͔Ε͍ͯͳ͍ɻ ࢥ͍͸ಉ͡ɺͱ͍͏ҙຯͰͷfriendly fork
11. Node.jsͱͷҧ͍
12. ϓϩδΣΫτͷऔΓ૊Έํ
13. io.js͸ΦʔϓϯΨόφϯεϞσϧ issue΍featureͷղܾΛΦʔϓϯʹ͢Δ࢓૊Έ
14. io.js͸ΦʔϓϯΨόφϯεϞσϧ ೋिؒʹҰճ͘Β͍ͷλΠϛϯάͰTC Meeting͕ߦΘΕɺϋϯάΞ΢τͷ࿥ ըͱٞࣄ࿥͕ల։͞ΕΔɻissue΍featureΛॲཧ͢Δͷ͸جຊతʹ߹੍ٞɺͨ ͩ͠ҙݟׂ͕ΕͨΒvoteͰܾΊΔɻ
15. ΦʔϓϯΨόφϯεʹΑͬͯissue/ featureͷಁ໌ੑΛ֬อ͠ɺίϯτϦ Ϗϡʔτ͠΍͘͢͢Δ
16. ΦʔϓϯΨόφϯεʹΑͬͯissue/ featureͷಁ໌ੑΛ֬อ͠ɺίϯτϦ Ϗϡʔτ͠΍͘͢͢Δ 1݄͚ͩͰ294ίϛοτ
18. ৽͘͠Committer͕6ਓ௥Ճ
19. ΦʔϓϯΨόφϯεʹΑΔಁ໌ੑͷ֬อ ͱio.js΁ͷظ଴͔Βίϛοτ਺ɺίϯτ ϦϏϡʔλʔ਺͕૿͑ͯΞΫςΟϒʹɻ
20. Node.jsͱͷ
 ػೳ໘Ͱͷҧ͍
21. v8ͷόʔδϣϯ v4.1.0.14
22. σϑΥϧτͰ࢖͑Δ let/const generators Binary/Octal Literal Template String Literal String new methods
23. "use strict"; // const const koa = require('koa'); const app = koa(); // generator app.use(function *(next){ // let block scope let start = new Date; // yield ඇಉظݺͼग़͠ΛݮΒͤΔ yield next; let ms = new Date - start; // template string literal this.set('X-Response-Time', `${ms}ms`); }); app.use(function *(next){ let start = new Date; yield next; let ms = new Date - start; console.log(`{this.method} {this.url} - ms`); }); ͜Μͳ෩ʹॻ͚Δ
24. --es_stagingΛ͚ͭΕ͹࢖͑Δ class Enhanced Object Literal Symbol.toStringTag
25. "use strict"; // class class Person { constructor(name, age) { this.name = name this.age = age } getInfo() { let name = this.name; let age = this.age; let nextAge = this.age + 1; // enhanced object literal return { name, age, nextAge }; } } // @@toStringTag ෇͚ͳ͍ͱ [object object] Person.prototype[Symbol.toStringTag] = "Person"; var alice = new Person('alice', 13); var bob = new Person('bob', 15); console.log('' + alice); console.log(bob.getInfo()); ͜Μͳ෩ʹॻ͚Δ
26. ҎԼͷػೳ͸ݸผʹϑϥά͕ඞཁ arrow_functions proxy Array new methods unicode ΋͏͠͹͓͠଴ͪΛɻ
27. ৽API௥Ճ V8
28. heap౷ܭ͕औΕΔ v8Φϓγϣϯ͕adhocʹઃఆͰ͖Δ
29. "use strict"; const v8 = require('v8'); // gcΛtrace͢ΔΦϓγϣϯΛONʹ͢Δ v8.setFlagsFromString('--trace-gc'); for (let i=0; i< 10000; i++) { // ώʔϓͷ౷ܭΛऔΔ console.log(v8.getHeapStatistics()); global.gc(); } // 10ඵ͚ؒͩv8ͷGCΛtrace͠ɺ͕࣌ؒա͗ͨΒOFFʹ͢Δ setTimeout(function(){ v8.setFlagsFromString('--notrace-gc'); }, 10 * 1000);
30. ͋ͱ͸ࡉ͔͘… simple creatation Stream
 assert.deepStrictEqual util.debuglog etc…
31. Node.jsͱͷ
 ੑೳ໘Ͱͷҧ͍
32. http͚ͩͰbench
33. http͚ͩͰbench 4%΄Ͳ޲্ http_parser͸ಉ͡(2.3.0)ͷͨΊɺ
 ͦ͜·ͰมԽ͸ແ͍ɻ
34. fs, net, tlsΛؚΊͯ
35. fs, net, tlsΛؚΊͯ શମతʹ10%ఔ౓ͷ޲্ɻ
36. ͦͷଞ io.jsͷ࠷৽ χϡʔε
37. ͜ΕݟΕ͹
 ͍͍ͩͨҰൃ https://www.youtube.com/watch?v=1IOukA10QeQ
38. Atom/NW.js͕io.jsʹ Travis CI΋ io.jsΛαϙʔτ Codeship΋io.jsΛαϙʔτ Tessel΋αϙʔτ…
39. io.jsͷ׆ಈΛNode Ϣʔβʔάϧʔϓ͸Ͳ ͏͢Δ͔ɻ
40. ੵۃతʹਐΊ͍ͯ͘
41. ಛʹࠓ͸Nodeͱiojs Ͳͬͪ࢖ͬͨΒ͍͍ ͔ࠞཚͯ͠Δ࣌ظ
42. օͰٞ࿦ΛਐΊ͍ͨ NodeͱiojsͷࠞཚΛ ೔ຊͰ͸๷͍͗ͨɻ
43. iojsͷ຋༁Λߦ͏ nodeͱiojsͷੑೳΛܧଓͯ͠ଌΔ ΑΓΞΫςΟϒʹٞ࿦Λߦ͑ΔΑ ͏ʹ͢Δ ۩ମతʹ
44. https://iojs-jp-slack.herokuapp.com/