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WebpackʹΑΔ ਓྨڞ௨ ίϯϙʔωϯτܭը @joe_re
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twitter: @joe_re github: @joe-re - ໊લ: ͡ΐ͏ - freeeͱ͍͏ձࣾͰಇ͍͍ͯ·͢ - ࠓΫϥυڅ༩ܭࢉͬͯ·͢
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React͕಄͠ɺੈք·͞ ʹେίϯϙʔωϯτ࣌ʂʂʂ
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ͱ͜ΖͰͦͦ ίϯϙʔωϯτͬͯԿʁʁʁ
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DOM͓Αͼ ৼΔ͍͕ఆٛ͞Εͨͷ
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ίϯϙʔωϯτࢦʹ͓͚Δ ίϯϙʔωϯτ࠶ར༻Մೳ Ͱͳ͚ΕͳΒͳ͍
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࠶ར༻Մೳͳίϯϙʔωϯτ Λ࡞Δʹʁ
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ίϯϙʔωϯτ༩͑ΒΕͨ ΛϢʔβͷཧղͰ͖Δ View(DOM)ʹม͢Δɺ DOMมػʹప͢Δ
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༩͑ΒΕ͕ͨಉ͡ͳͷʹɺ ҧ͏ϨϯμϦϯά݁Ռʹͳͬ ͍͚ͯͳ͍
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ඳըͷݩʹͳΔͷੜϩδο Ϋܾͯ͠ίϯϙʔωϯτʹ ؚΜͰ͍͚ͳ͍ (ͦͷͨΊͷFlux)
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ਓྨڞ௨ίϯϙʔωϯτͱ
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͜͏͍͏ͷ
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͜͏ݟ͑ͯ150ߦͷ ϩδοΫ͕٧·͍ͬͯΔ • ݺͼग़࣌͠ʹmax-minͷൣғܾΊΒΔ • ݄ͷબΛҰϲ݄લʹม͑ͨ࣌ʹɺଘࡏ͠ͳ ͍Λબ͠ͳ͍ (2016/3/31 ➡ 2016/2/29ʹͳΔ) • ͳͲͳͲ
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ڞ௨Խͯ͠ͲͷϓϩμΫτ͔ ΒͰݺΔΑ͏ʹ͍ͨ͠ʂ
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ڞ௨ίϯϙʔωϯτͱ͢Δ͜ͱ Ͱ • ڞ௨Ͱ͏Α͏ͳinputɺselectͳͲʹ͓͍ͯɺݟ ͨૢ࡞ੑʹϓϩμΫτ͝ͱʹൃੜ͢ΔΒͭ ͖Λͳͤ͘Δ (freeeϒϥϯυͷΞϓϦέʔγϣϯʹ͓͚Δڞ௨ͷ ݟͨɺৼΔ͍Λ࣋ͨͤΔ) • ࠶ར༻ੑͷߴ͍ίϯϙʔωϯτʹΑΔ։ൃͷޮ Խ
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ҙ • ਓྨڞ௨ͱ͍͍ͭͭɺ͜͜Ͱ͍͏ਓྨʹ 1ͭͷձࣾͷఏڙ͢ΔWebΞϓϦέʔγϣϯͱ ͦΕΛར༻͢ΔϢʔβ͔͠ଘࡏ͠·ͤΜ • Reactͷ༻Λલఏʹ͓͠·͢
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Α͠ɺWebpackͩʂ
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Webpackͱ • WebΞϓϦέʔγϣϯͷ੩తΞηοτͷϏϧυ πʔϧͰ͢ • JSͷτϥϯεύΠϧґଘղܾͪΖΜͰ͖ ·͢ • JS͚ͩͰͳ͘StyleImageͳͲͷϏϧυ͓Αͼ όϯυϧαϙʔτ͠·͢
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࠶ར༻Մೳͳίϯϙʔωϯτ ͷཉ • τϥϯεύΠϧʹඞཁͳπʔϧͷόʔδϣϯཁٻͨ͘͠ͳ ͍(babelͷόʔδϣϯͱ͔) • ͱ͍͑༻͢ΔϥΠϒϥϦͷࡉ͔ͳόʔδϣϯ֤Ξϓ ϦέʔγϣϯͰཧ͍ͨ͠ • ݟͨἧ͍͑ͨ(styleఆؚٛΈ͍ͨ) • ͱ͍͑ར༻ଆͰstyleͷඍௐ͍ͨ͠(styleͷଧͪফ͠ ্ॻ͖͕༰қͰ͋Δඞཁ͕͋Δ)
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ͬ͘͟Γํ • τϥϯεύΠϧޙͷjsΛఏڙ͢Δ • ༻͢ΔϥΠϒϥϦexternalsʹࢦఆ͢Δ • css loaderΛ͍ɺstyleఆٛΛϩʔΧϧείʔ ϓͰ࣋ͨͤΔ
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Webpackͷexternalsͷࢦఆ
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Webpackͷexternalsͷࢦఆ ᶃFYUFSOBMTରͷจࣈྻ ᶄτϥϯεύΠϧޙͷจࣈྻ ᶅґଘղܾํ๏
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ɾϏϧυલ ɾϏϧυޙ XFCQBDL Webpackͷexternalsͷࢦఆ
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ɾϏϧυલ ɾϏϧυޙ XFCQBDLͰϏϧυ Webpackͷexternalsͷࢦఆ ᶃFYUFSOBMTରͷจࣈྻ ᶅґଘղܾํ๏ ᶄτϥϯεύΠϧޙͷจࣈྻ
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externalsࢦఆͰಘΔͷ • ϥΠϒϥϦͷόʔδϣϯࢦఆར༻ଆʹدͤ ΒΕΔ • ϏϧυޙͷjsΛఏڙͯ͠αΠζ͕͑ΒΕΔ
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css loaderͷར༻ IPHFSFBDUKT IPHFTDTT
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css loaderͷར༻
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css loaderʹΑͬͯಘΔͷ • styleίϯϙʔωϯτԽ͢Δ͜ͱͰʹؚΉ͜ͱͰɺݟͨͷ Β͖ͭΛ͑ΒΕΔ • ϩʔΧϧείʔϓηϨΫλ໊Λbase64ͰΤϯίʔυ͢Δ͜ͱ ʹΑ࣮ͬͯݱ͍ͯ͠ΔɻΫϥε໊͕มΘΔ͚ͩͰৄࡉ͕ߴ͘ͳ Δ͜ͱͳ͍ (Αͬͯ֎෦͔ΒͷελΠϧͷଧͪফ͠ɾ্ॻ͖͕༰қʹͰ͖Δ) • ίϯϙʔωϯτ։ൃ࣌ʹηϨΫλͷিಥΛؾʹ͠ͳͯ͘ྑ͘ͳ Δ
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ίϯϙʔωϯτͷߏͷن ൪֎ଆʹ֎෦͔Β͞ΕͨDMBTT/BNFͱɺϩʔΧϧείʔϓΛDMBTT/BNFʹ͢Δ ൪ίϯϙʔωϯτͷ໊ΛDMBTT/BNFʹ͢Δ ͦΕΑΓଆʹίϯϙʔωϯτͷ༰Λهड़͢Δ
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نΛ࣋ͨͤΔ͜ͱͰɺ ֎෦͔ΒͷελΠϧͷ ଧͪফ্͠ॻ͖͕ ͘͢͠ͳΔ
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نʹ͍ͭͯ ઈࢍࢼߦࡨޡதͰ͢ɻɻ ྑ͍ϓϥΫςΟε͝ଘͰ͠ ͨΒੋඇڭ͍͑ͯͩ͘͞ʂ
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ΤϯδχΞઈࢍืूதʂ
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͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ