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JavaScriptのimport/export
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Kazunori-Kimura
March 06, 2018
Technology
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740
JavaScriptのimport/export
JavaScriptのimport/exportについて、CommonJS ModulesとES Modulesの違いとWebPack, Parcelの紹介
Kazunori-Kimura
March 06, 2018
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Transcript
JavaScriptͷ import/export 2018-03-17 ଜ ݑن
ΞδΣϯμ JavaScriptͷimport/export ES Modulesͷ࣮ঢ়گ webpack4͕ϦϦʔε Parcelͷհ
ΞδΣϯμ JavaScriptͷimport/export ES Modulesͷ࣮ঢ়گ webpack4͕ϦϦʔε Parcelͷհ
ෳͷJavaScriptΛಡΈࠐΉ <html> <body> : <script src="assets/jquery.min.js"></script> <script src="assets/bootstrap.min.js"></script> <script src="app.js"></script>
</body> </html>
ෳͷJavaScriptΛಡΈࠐΉ <html> <body> : <script src="assets/jquery.min.js"></script> <script src="assets/bootstrap.min.js"></script> <script src="app.js"></script>
</body> </html> ଞݴޠͷJNQPSUJODMVEFʹ ֘͢Δػೳ͕ͳ͔ͬͨ
JavaScriptͷimport/export $PNNPO+4.PEVMFT &4.PEVMFT FYQPSUଆ YYYKT NPEVMFFYQPSUTYYY FYQPSUEFGBVMUYYY JNQPSUଆ JOEFYKT
DPOTUYYYSFRVJSF YYY JNQPSUYYYGSPNYYY
JavaScriptͷimport/export $PNNPO+4.PEVMFT &4.PEVMFT FYQPSUଆ YYYKT NPEVMFFYQPSUTYYY FYQPSUEFGBVMUYYY JNQPSUଆ JOEFYKT
DPOTUYYYSFRVJSF YYY JNQPSUYYYGSPNYYY /PEFKT αʔόʔαΠυ+4 ͷ༷
JavaScriptͷimport/export $PNNPO+4.PEVMFT &4.PEVMFT FYQPSUଆ YYYKT NPEVMFFYQPSUTYYY FYQPSUEFGBVMUYYY JNQPSUଆ JOEFYKT
DPOTUYYYSFRVJSF YYY JNQPSUYYYGSPNYYY &$."4DSJQUͷ༷
JavaScriptͷimport/export $PNNPO+4.PEVMFT &4.PEVMFT FYQPSUଆ YYYKT NPEVMFFYQPSUTYYY FYQPSUEFGBVMUYYY JNQPSUଆ JOEFYKT
DPOTUYYYSFRVJSF YYY JNQPSUYYYGSPNYYY
ΞδΣϯμ JavaScriptͷimport/export ES Modulesͷ࣮ঢ়گ webpack4͕ϦϦʔε Parcelͷհ
ϒϥβͷରԠঢ়گ JNQPSU+BWB4DSJQUc.%/ IUUQTEFWFMPQFSNP[JMMBPSHKBEPDT8FC+BWB4DSJQU3FGFSFODF 4UBUFNFOUTJNQPSU
Node.jsͰES Modules ֦ுࢠΛͯ͢ .mjs ͱ͢Δ --experimental-modulesϑϥάΛࢦఆ ͑Δ...͕ɺWarning͕දࣔ͞ΕΔ
ΞδΣϯμ JavaScriptͷimport/export ES Modulesͷ࣮ঢ়گ webpack4͕ϦϦʔε Parcelͷհ
όϯυϧπʔϧ ෳͷJavaScriptϑΝΠϧΛ ͻͱͭʹ݁߹
όϯυϧπʔϧ πʔϧ ಛ ରԠ CSPXTFSJGZ γϯϓϧ $PNNPO+4.PEVMFT XFCQBDL ଟػೳ
$PNNPO+4.PEVMFT &4.PEVMFT $44 *NBHFT
όϯυϧπʔϧ πʔϧ ಛ ରԠ CSPXTFSJGZ γϯϓϧ $PNNPO+4.PEVMFT XFCQBDL ଟػೳ
$PNNPO+4.PEVMFT &4.PEVMFT $44 *NBHFT
WebPack4͕ 2018-2-25 ʹϦϦʔε
webpack webpack4͔ΒઃఆϑΝΠϧͳ͠Ͱಈ࡞ CLIͰ͏ʹ webpack ͱ webpack-cli Λ༻
ΞδΣϯμ JavaScriptͷimport/export ES Modulesͷ࣮ঢ়گ webpack4͕ϦϦʔε Parcelͷհ
ઃఆϑΝΠϧෆཁ js,cssͳͲͷґଘؔΛ ௐࠪ͠τϥϯεύΠϧɾ όϯυϧΛߦ͏ > parcel index.html
ΞδΣϯμ JavaScriptͷimport/export ES Modulesͷ࣮ঢ়گ webpack4͕ϦϦʔε Parcelͷհ