Slide 1
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"UBMFPGQPXFSBTTFSU
📷🙆 🙆
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#jsconfjp
rev.1
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QPXFSBTTFSU
import assert from 'node:assert';
const truthy = '1';
const falsy = 0;
assert(truthy === falsy);
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QPXFSBTTFSUJTBUSBOTQJMFSBOEXPSLTMJLFBDIBSN
assert(truthy === falsy)
| | |
| | 0
"1" false
import assert from 'node:assert';
const truthy = '1';
const falsy = 0;
assert(truthy === falsy);
/P"1*JTUIFCFTU"1*
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assert(truthy === falsy);
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assert(truthy
===
falsy);
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$BTF4UVEZBTTFSUJPODBOPOJDBMJ[BUJPOBOE+49
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2)PXEP*IBOEMFBOBTTFSUJPOFYQSFTTJPOUIBUTQBOTNVMUJQMFMJOFT
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"6TFDPEFHFOFSBUPSXIJMFUSBWFSTJOHXJUIZPVSUSBOTQJMFSTPUIBUZPVDBO
HFUBTIPSUDBOPOJDBMJ[FETUSJOHPGUIFBTTFSUJPOFYQSFTTJPOPOBTJOHMF
DPODJTFMJOF/BNFJUDBOPOJDBMJ[FEBTTFSUJPO5IFOFNCFEUIF
DBOPOJDBMJ[FEBTTFSUJPOJOUIFHFOFSBUFEDPEFBOEQBTTJUUPUIFSVOUJNFTJEF
"USBOTQJMFSͰUSBWFSTF͢ΔࡍʹίʔυɾδΣωϨʔλʔΛ༻͠ɺද໌ͷࣜΛҰߦ
ʹ͘ਖ਼نԽͨ͠จࣈྻΛऔಘͰ͖ΔΑ͏ʹ͠·͠ΐ͏ɻ໊͚ΔͳΒʮਖ਼نԽ͞Ε
ͨΞαʔγϣϯʯͰ͢ɻͦͷਖ਼نԽ͞ΕͨΞαʔγϣϯΛੜͨ͠ίʔυͷதʹຒΊ
ࠐΈɺ࣮ߦଆʹ͠·͢ɻ
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25IFQPTJUJPOJOUIFDBOPOJDBMJ[FEBTTFSUJPONBZCFEJ
ff
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PSJHJOBMQPTJUJPO8IBUTIPVME*EP
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Ͳ͏͠·͔͢ʁ
"%F
fi
OFBMPHJDBMQBUIUPQPJOUUPBTQFDJ
fi
DMPDBUJPOJOUIFBTTFSUJPO
FYQSFTTJPO/BNFJUFTQBUI&BDIMPDBUJPOJOUIFBTTFSUJPOJTQPJOUFEUPCZ
FTQBUI
OPUQPTJUJPO
"ΞαʔγϣϯͷதͷಛఆͷҐஔΛࢦࣔͨ͢͠ΊͷཧతͳύεΛఆٛ͠·͢ɻͦ
ΕΛʮFTQBUIʯͱ໊͚·͠ΐ͏ɻΞαʔγϣϯͷதͷ֤෦ҐҐஔͰͳ͘
FTQBUIͰࢦࣔ͠͠·͢ɻ
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2)PXEP*HFUUIFBDUVBMMPDBUJPOGSPNUIFMPHJDBMFTQBUIBUSVOUJNF
2࣮ߦ࣌ʹཧతͳFTQBUI͔Β࣮ࡍͷҐஔΛऔಘ͢ΔʹͲ͏͠·͔͢ʁ
"#VOEMFBQBSTFSBOEBWJTJUPSPOUIFSVOUJNFTJEF'JSTU
QBSTFUIF
DBOPOJDBMJ[FEBTTFSUJPOUP"45XJUIMPDBUJPOJOGPSNBUJPO
BOEXIFOUSBWFSTJOH
"45XJUIUIFWJTJUPS
DPNQBSFFTQBUIXJUIUIFDVSSFOUUSBWFSTBMQBUIBUFBDI
OPEFBOESFUVSOUIFMPDBUJPOJGNBUDIFE5IJTXJMMDSFBUFBNBQQJOHCFUXFFO
MPHJDBMFTQBUITBOEQIZTJDBMMPDBUJPOT
"ϥϯλΠϜଆʹQBSTFSͱWJTJUPSΛόϯυϧ͠·͢ɻ·ͣਖ਼نԽ͞ΕͨΞαʔ
γϣϯΛMPDBUJPOใ͖ͰQBSTF͠ɺWJTJUPSͰτϥόʔε͢Δࡍʹ֤ϊʔυͰ
FTQBUIͱͷൺֱΛߦ͍ɺϚονͨ͠ΒͦͷҐஔΛฦ͢Α͏ʹ͠·͢ɻ͜ΕͰཧύε
ͱཧҐஔͷϚοϐϯά͕Ͱ͖·͢ɻ
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8IBUBDMFWFSTPMVUJPO
const truthy = '1';
const falsy = 0;
assert(truthy
===
falsy);
assert(truthy === falsy)
| | |
| | 0
"1" false
Slide 13
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)FSFDPNFTUIF+49
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28IBUJGUIFSFJTB+49FMFNFOUJOUIFBTTFSUJPOFYQSFTTJPO
2ද໌ࣜͷதʹ+49ཁૉ͕͋ͬͨΒͲ͏͠·͔͢
"6TF#BCFMBTZPVSUSBOTQJMFSBOEXSJUFB#BCFMWFSTJPOPGQPXFS
BTTFSUWJTJUPS
"τϥϯεύΠϥʹ#BCFMΛ͍ɺ#BCFM൛ͷQPXFSBTTFSUWJTJUPSΛॻ͖·
͠ΐ͏ɻ
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2#VUCBCFMQBSTFSBOECBCFMUSBWFSTFEPOPUXPSLPO PME
CSPXTFST
TP*DBOUCVOEMFUIFNPOUIFSVOUJNFTJEF
2ͰCBCFMQBSTFSCBCFMUSBWFSTFʢݹ͍ʣϒϥβ্Ͱಈ͔ͳ͍ͷͰϥ
ϯλΠϜଆʹόϯυϧͰ͖·ͤΜɻ
"(JWFVQCVOEMJOHCBCFMQBSTFSBOECBCFMUSBWFSTF
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BDPSOBOEFTUSBWFSTFXIJDIXPSLTPOPMEFSCSPXTFST
"ͰCBCFMQBSTFSͱCBCFMUSBWFSTFΛόϯυϧ͢ΔͷఘΊͯɺݹ͍ϒϥ
βͰಈ͘BDPSOͱFTUSBWFSTFͷΈΛόϯυϧ͠ଓ͚Δ͢Δ͜ͱʹ͠·͠ΐ͏ɻ
Slide 16
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2#VUXJUIPVU#BCFMQBSTFS
*DBOOPUQBSTFDBOPOJDBMJ[FEBTTFSUJPOTDPOUBJOJOH
+49FMFNFOUTBUSVOUJNF
2Ͱ#BCFMͷQBSTFS͕ͳ͍ͱ+49ཁૉؚ͕·Εͨਖ਼نԽ͞ΕͨΞαʔγϣϯΛ࣮ߦ࣌ʹ
QBSTFͰ͖·ͤΜ
"*OTUFBEPGQBSTJOHUIFNBUSVOUJNF
QBSTFUIFDBOPOJDBMJ[FEBTTFSUJPOTUSJOH
JUTFMGBUDPNQJMFUJNF
UVSOJUJOUPB+40/TUSJOH
FNCFEJUJOZPVSDPEF
BOEQBTTJU
UPUIFSVOUJNFTJEF*GZPVIBWFUIBU+40/
USFBUJUBTBQBSTFE"45
"࣮ߦ࣌ʹQBSTF͢ΔͷͰͳ͘ɺਖ਼نԽ͞ΕͨΞαʔγϣϯจࣈྻࣗίϯύΠϧ࣌
ʹQBSTFͯ͠ɺͦΕΛ+40/จࣈྻʹͯ͠ίʔυʹຒΊࠐΈɺϥϯλΠϜଆʹ͠·͠ΐ
͏ɻͦͷ+40/͕͋Δ߹ͦΕΛύʔεࡁΈͷ"45ͱͯ͠ѻ͍·͠ΐ͏ɻ
Slide 17
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2#VUFTUSBWFSTFEPFTOULOPXUIFLFZPGUIF+49FMFNFOUT
TPUIF
USBWFSTFGBJMT
2ͰFTUSBWFSTF+49ཁૉͷLFZΛΒͳ͍ͷͰτϥόʔεʹࣦഊ͠·͢
"5IFWJTJUPS,FZTVTFECZUIFCBCFMUSBWFSTFTIPVMEBMTPCFDPOWFSUFE
UP+40/
FNCFEEFEJOUIFDPEF
BOEQBTTFEUPUIFSVOUJNFTJEF
"Ͱ#BCFMUSBWFSTF͕͍ͬͯΔWJTJUPS,FZT+40/Խͯ͠ίʔυʹຒΊࠐ
ΈɺϥϯλΠϜଆʹ͠·͠ΐ͏ɻ
Slide 18
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24PSSZ
*XBTBDUVBMMZVTJOHUPLFOTFRVFODFTBTXFMMBT"45TUP
fi
OEPVU
UIFFYBDUMPDBUJPOPGPQFSBUPSTBQQFBSJOHJOBTTFSUJPOFYQSFTTJPOT TJHI
2͝ΊΜͳ͍͞ɺࣜͷதʹొ͢Δԋࢉࢠͷਖ਼֬ͳҐஔΛௐΔͨΊʹɺ࣮
"45͚ͩͰͳ͘τʔΫϯྻ͍ͬͯ·ͨ͠ʢͨΊଉʣ
"5IFO
UIFUPLFOTFRVFODFQBSTFECZCBCFMQBSTFSTIPVMEBMTPCF
DPOWFSUFEUP+40/
FNCFEEFEJOUIFDPEF
BOEQBTTFEUPUIFSVOUJNFTJEF
"ͰCBCFMQBSTFS͕QBSTFͨ͠τʔΫϯྻ+40/Խͯ͠ίʔυʹຒΊࠐΈɺϥ
ϯλΠϜଆʹ͠·͠ΐ͏ɻ
Slide 19
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\"body\"],\"DeclareFunction\":[\"id\"],\"DeclareInterface\":[\"id\",\"typeParameters\",\"extends\",\"mixins\",\"implements\",\"body\"],\"DeclareModule\":[\"id\",\"body\"],\"DeclareModuleExports
[\"typeAnnotation\"],\"DeclareTypeAlias\":[\"id\",\"typeParameters\",\"right\"],\"DeclareOpaqueType\":[\"id\",\"typeParameters\",\"supertype\"],\"DeclareVariable\":[\"id\"],\"DeclareExportDecla
[\"declaration\",\"specifiers\",\"source\"],\"DeclareExportAllDeclaration\":[\"source\"],\"DeclaredPredicate\":[\"value\"],\"ExistsTypeAnnotation\":[],\"FunctionTypeAnnotation\":[\"typeParamete
\"params\",\"rest\",\"returnType\"],\"FunctionTypeParam\":[\"name\",\"typeAnnotation\"],\"GenericTypeAnnotation\":[\"id\",\"typeParameters\"],\"InferredPredicate\":[],\"InterfaceExtends\":[\"id
\"typeParameters\"],\"InterfaceDeclaration\":[\"id\",\"typeParameters\",\"extends\",\"mixins\",\"implements\",\"body\"],\"InterfaceTypeAnnotation\":[\"extends\",\"body\"],\"IntersectionTypeAnno
[\"types\"],\"MixedTypeAnnotation\":[],\"EmptyTypeAnnotation\":[],\"NullableTypeAnnotation\":[\"typeAnnotation\"],\"NumberLiteralTypeAnnotation\":[],\"NumberTypeAnnotation\":[],\"ObjectTypeAnno
[\"properties\",\"indexers\",\"callProperties\",\"internalSlots\"],\"ObjectTypeInternalSlot\":[\"id\",\"value\",\"optional\",\"static\",\"method\"],\"ObjectTypeCallProperty\":[\"value\"],
\"ObjectTypeIndexer\":[\"id\",\"key\",\"value\",\"variance\"],\"ObjectTypeProperty\":[\"key\",\"value\",\"variance\"],\"ObjectTypeSpreadProperty\":[\"argument\"],\"OpaqueType\":[\"id\",\"typePa
\"supertype\",\"impltype\"],\"QualifiedTypeIdentifier\":[\"id\",\"qualification\"],\"StringLiteralTypeAnnotation\":[],\"StringTypeAnnotation\":[],\"ThisTypeAnnotation\":[],\"TupleTypeAnnotation
[\"types\"],\"TypeofTypeAnnotation\":[\"argument\"],\"TypeAlias\":[\"id\",\"typeParameters\",\"right\"],\"TypeAnnotation\":[\"typeAnnotation\"],\"TypeCastExpression\":[\"expression\",\"typeAnno
\"TypeParameter\":[\"bound\",\"default\",\"variance\"],\"TypeParameterDeclaration\":[\"params\"],\"TypeParameterInstantiation\":[\"params\"],\"UnionTypeAnnotation\":[\"types\"],\"Variance\":[],
\"VoidTypeAnnotation\":[],\"JSXAttribute\":[\"name\",\"value\"],\"JSXClosingElement\":[\"name\"],\"JSXElement\":[\"openingElement\",\"children\",\"closingElement\"],\"JSXEmptyExpression\":[],
\"JSXExpressionContainer\":[\"expression\"],\"JSXSpreadChild\":[\"expression\"],\"JSXIdentifier\":[],\"JSXMemberExpression\":[\"object\",\"property\"],\"JSXNamespacedName\":[\"namespace\",\"nam
\"JSXOpeningElement\":[\"name\",\"attributes\"],\"JSXSpreadAttribute\":[\"argument\"],\"JSXText\":[],\"JSXFragment\":[\"openingFragment\",\"children\",\"closingFragment\"],\"JSXOpeningFragment\
\"JSXClosingFragment\":[],\"Noop\":[],\"ParenthesizedExpression\":[\"expression\"],\"AwaitExpression\":[\"argument\"],\"BindExpression\":[\"object\",\"callee\"],\"ClassProperty\":[\"key\",\"val
\"typeAnnotation\",\"decorators\"],\"OptionalMemberExpression\":[\"object\",\"property\"],\"PipelineTopicExpression\":[\"expression\"],\"PipelineBareFunction\":[\"callee\"],
\"PipelinePrimaryTopicReference\":[],\"OptionalCallExpression\":[\"callee\",\"arguments\",\"typeParameters\",\"typeArguments\"],\"ClassPrivateProperty\":[\"key\",\"value\"],\"ClassPrivateMethod
[\"key\",\"params\",\"body\",\"decorators\",\"returnType\",\"typeParameters\"],\"Import\":[],\"Decorator\":[\"expression\"],\"DoExpression\":[\"body\"],\"ExportDefaultSpecifier\":[\"exported\"]
\"ExportNamespaceSpecifier\":[\"exported\"],\"PrivateName\":[\"id\"],\"BigIntLiteral\":[],\"TSParameterProperty\":[\"parameter\"],\"TSDeclareFunction\":[\"id\",\"typeParameters\",\"params\",
\"returnType\"],\"TSDeclareMethod\":[\"decorators\",\"key\",\"typeParameters\",\"params\",\"returnType\"],\"TSQualifiedName\":[\"left\",\"right\"],\"TSCallSignatureDeclaration\":[\"typeParamete
\"parameters\",\"typeAnnotation\"],\"TSConstructSignatureDeclaration\":[\"typeParameters\",\"parameters\",\"typeAnnotation\"],\"TSPropertySignature\":[\"key\",\"typeAnnotation\",\"initializer\"
\"TSMethodSignature\":[\"key\",\"typeParameters\",\"parameters\",\"typeAnnotation\"],\"TSIndexSignature\":[\"parameters\",\"typeAnnotation\"],\"TSAnyKeyword\":[],\"TSUnknownKeyword\":[],
\"TSNumberKeyword\":[],\"TSObjectKeyword\":[],\"TSBooleanKeyword\":[],\"TSStringKeyword\":[],\"TSSymbolKeyword\":[],\"TSVoidKeyword\":[],\"TSUndefinedKeyword\":[],\"TSNullKeyword\":[],\"TSNever
[],\"TSThisType\":[],\"TSFunctionType\":[\"typeParameters\",\"typeAnnotation\"],\"TSConstructorType\":[\"typeParameters\",\"typeAnnotation\"],\"TSTypeReference\":[\"typeName\",\"typeParameters\
\"TSTypePredicate\":[\"parameterName\",\"typeAnnotation\"],\"TSTypeQuery\":[\"exprName\"],\"TSTypeLiteral\":[\"members\"],\"TSArrayType\":[\"elementType\"],\"TSTupleType\":[\"elementTypes\"],
\"TSOptionalType\":[\"typeAnnotation\"],\"TSRestType\":[\"typeAnnotation\"],\"TSUnionType\":[\"types\"],\"TSIntersectionType\":[\"types\"],\"TSConditionalType\":[\"checkType\",\"extendsType\",
\"trueType\",\"falseType\"],\"TSInferType\":[\"typeParameter\"],\"TSParenthesizedType\":[\"typeAnnotation\"],\"TSTypeOperator\":[\"typeAnnotation\"],\"TSIndexedAccessType\":[\"objectType\",\"in
\"TSMappedType\":[\"typeParameter\",\"typeAnnotation\"],\"TSLiteralType\":[\"literal\"],\"TSExpressionWithTypeArguments\":[\"expression\",\"typeParameters\"],\"TSInterfaceDeclaration\":[\"id\",
\"typeParameters\",\"extends\",\"body\"],\"TSInterfaceBody\":[\"body\"],\"TSTypeAliasDeclaration\":[\"id\",\"typeParameters\",\"typeAnnotation\"],\"TSAsExpression\":[\"expression\",\"typeAnnota
\"TSTypeAssertion\":[\"typeAnnotation\",\"expression\"],\"TSEnumDeclaration\":[\"id\",\"members\"],\"TSEnumMember\":[\"id\",\"initializer\"],\"TSModuleDeclaration\":[\"id\",\"body\"],\"TSModule
[\"body\"],\"TSImportEqualsDeclaration\":[\"id\",\"moduleReference\"],\"TSExternalModuleReference\":[\"expression\"],\"TSNonNullExpression\":[\"expression\"],\"TSExportAssignment\":[\"expressio
\"TSNamespaceExportDeclaration\":[\"id\"],\"TSTypeAnnotation\":[\"typeAnnotation\"],\"TSTypeParameterInstantiation\":[\"params\"],\"TSTypeParameterDeclaration\":[\"params\"],\"TSTypeParameter\"
[\"constraint\",\"default\"]}";
(0, _powerAssert.default)(_rec8._expr(_rec8._capt(_rec8._capt(_rec8._capt(_rec8._capt((0, _enzyme.mount)(_react.default.createElement(_Foo.default, null)), "arguments/0/left/object/callee
object").find('.foo'), "arguments/0/left/object").length, "arguments/0/left") === 1, "arguments/0"), {
content: "assert(mount().find('.foo').length === 1)",
filepath: "test/fixtures/React/fixture.js",
line: 60,
ast: "{\"type\":\"CallExpression\",\"callee\":{\"type\":\"Identifier\",\"name\":\"assert\",\"range\":[0,6]},\"arguments\":[{\"type\":\"BinaryExpression\",\"operator\":\"===\",\"left\":{
\"MemberExpression\",\"object\":{\"type\":\"CallExpression\",\"callee\":{\"type\":\"MemberExpression\",\"object\":{\"type\":\"CallExpression\",\"callee\":{\"type\":\"Identifier\",\"name\":\"mou
\"range\":[7,12]},\"arguments\":[{\"type\":\"JSXElement\",\"openingElement\":{\"type\":\"JSXOpeningElement\",\"name\":{\"type\":\"JSXIdentifier\",\"name\":\"Foo\",\"range\":[14,17]},\"attribute
\"selfClosing\":true,\"range\":[13,20]},\"closingElement\":null,\"children\":[],\"range\":[13,20]}],\"range\":[7,21]},\"property\":{\"type\":\"Identifier\",\"name\":\"find\",\"range\":[22,26]},
\"computed\":false,\"range\":[7,26]},\"arguments\":[{\"type\":\"StringLiteral\",\"value\":\".foo\",\"range\":[27,33]}],\"range\":[7,34]},\"property\":{\"type\":\"Identifier\",\"name\":\"length\
\"range\":[35,41]},\"computed\":false,\"range\":[7,41]},\"right\":{\"type\":\"NumericLiteral\",\"value\":1,\"range\":[46,47]},\"range\":[7,47]}],\"range\":[0,48]}",
tokens: "[{\"type\":{\"label\":\"name\"},\"value\":\"assert\",\"range\":[0,6]},{\"type\":{\"label\":\"(\"},\"range\":[6,7]},{\"type\":{\"label\":\"name\"},\"value\":\"mount\",\"range\":
{\"type\":{\"label\":\"(\"},\"range\":[12,13]},{\"type\":{\"label\":\"jsxTagStart\"},\"range\":[13,14]},{\"type\":{\"label\":\"jsxName\"},\"value\":\"Foo\",\"range\":[14,17]},{\"type\":{\"label
\"value\":\"/\",\"range\":[18,19]},{\"type\":{\"label\":\"jsxTagEnd\"},\"range\":[19,20]},{\"type\":{\"label\":\")\"},\"range\":[20,21]},{\"type\":{\"label\":\".\"},\"range\":[21,22]},{\"type\"
{\"label\":\"name\"},\"value\":\"find\",\"range\":[22,26]},{\"type\":{\"label\":\"(\"},\"range\":[26,27]},{\"type\":{\"label\":\"string\"},\"value\":\".foo\",\"range\":[27,33]},{\"type\":{\"lab
\"},\"range\":[33,34]},{\"type\":{\"label\":\".\"},\"range\":[34,35]},{\"type\":{\"label\":\"name\"},\"value\":\"length\",\"range\":[35,41]},{\"type\":{\"label\":\"==/!=\"},\"value\":\"===\",\"
*UXPSLT
CVU
Slide 20
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$BTF4UVEZTUSJOHXJEUI
Slide 21
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$BTFTUVEZ4USJOHXJEUI
const truthy = '真理';
const falsy = 0;
assert(truthy === falsy);
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$BTFTUVEZ4USJOHXJEUI
const truthy = '真理';
const falsy = 0;
assert(truthy === falsy);
assert(truthy === falsy)
| | |
| | 0
"真理" false
(BQ
Slide 23
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2)PXEPZPVDBMDVMBUFTUSJOHXJEUIXIFOUIFDBQUVSFEWBSJBCMFDPOUBJOTGVMM
XJEUITUSJOHT
GPSFYBNQMF
,BOKJDIBSBDUFST
2Ωϟϓνϟͨ͠ม͕ྫ͑ࣈͷΑ͏ͳશ֯จࣈྻΛؚΜͰ͍Δ߹ͷจࣈ෯ܭࢉΛ
Ͳ͏͠·͔͢ʁ
"6TF&BTU"TJBO$IBSBDUFS8JEUIGPSDBMDVMBUJPO&BTU"TJBO8JEUIJTPOFPG
UIF6OJDPEF4UBOEBSE"OOFYFT
XIJDIEF
fi
OFTUIFA&BTU@"TJBO@8JEUIAJOGPSNBUJWF
QSPQFSUZUIBUHJWFTIJOUTBCPVUUIFDIBSBDUFSXJEUIPGFBDIDIBSBDUFSJOUIF
6OJDPEF4UBOEBSE
"ʮ౦ΞδΞͷจࣈ෯ʯΛܭࢉʹ͍·͢ɻʮ౦ΞδΞͷจࣈ෯ʯɺ6OJDPEFඪ४ͷෟ
ଐॻͷҰͭͰɺ6OJDPEFʹऩ͞Ε͍ͯΔ֤จࣈͷจࣈ෯ʹؔ͢ΔώϯτΛ༩͑Δ
A&BTU@"TJBO@8JEUIAࢀߟಛੑΛఆΊ͍ͯ·͢ɻ
Slide 24
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-PPLTHPPE
const truthy = '真理';
const falsy = 0;
assert(truthy === falsy);
assert(truthy === falsy)
| | |
| | 0
"真理" false
(PPE
Slide 25
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😺)FSFDPNFTUIF&NPKJT👻
Slide 26
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&NPKJT
const family = '👨';
const falsy = 0;
assert(family === falsy);
Slide 27
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2)PXEPZPVDBMDVMBUFTUSJOHXJEUIXIFOUIFDBQUVSFEWBSJBCMF
DPOUBJOTFNPKJT
2Ωϟϓνϟͨ͠ม͕ֆจࣈΛؚΜͰ͍Δ߹ͷจࣈྻ෯ܭࢉΛͲ͏͠
·͔͢ʁ
"6TFFNPKJSFHFYQBDLBHFUPJEFOUJGZFNPKJTBOEUSFBUUIFNBT
GVMMXJEUITUSJOHT
"ʮFNPKJSFHFYʯύοέʔδΛͬͯֆจࣈΛࣝผ͠ɺશ֯จࣈྻͱ͠
ͯѻ͍·͠ΐ͏ɻ
Slide 28
Slide 28 text
-PPLTHPPE
const family = '👨';
const falsy = 0;
assert(family === falsy);
assert(family === falsy)
| | |
| | 0
"👨" false
Slide 29
Slide 29 text
)FSFDPNFTUIF&NPKJ;8+ ;FSP8JEUI+PJOFS
👁🗨 = 👁+🗨
👨
👨 = 👱+❤+💋+👱
👪 = 👱+👩+👧+👦
Slide 30
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FYQFDUFE
const family = '👨👩';
const falsy = 0;
assert(family === falsy);
assert(family === falsy)
| | |
| | 0
"👨👩" false
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8SFTUMJOHXJUIFNPKJTBOEBNCJHVPVTDIBSBDUFST
export function widthOf (str: string): KnownWidth | UnknownWidth {
const segmenter = new Intl.Segmenter();
const emojiRe = emojiRegex();
let width = 0;
let unknown = false;
let emoji = 0;
let ambiguous = 0;
let neutral = 0;
for (const { segment: seg } of segmenter.segment(str)) {
const code = easta(seg);
switch (code) {
case 'F':
width += 2;
break;
case 'H':
width += 1;
break;
case 'A':
unknown = true;
ambiguous += 1;
width += 2;
break;
case 'W':
if (emojiRe.test(seg)) {
unknown = true;
emoji += 1;
}
width += 2;
break;
case 'Na':
width += 1;
break;
case 'N':
unknown = true;
Slide 32
Slide 32 text
4UJMMCSPLFO
const family = '👨👩';
const falsy = 0;
assert(family === falsy);
Slide 33
Slide 33 text
)FSFDPNFTUIF5ZQF4DSJQU
)FSFDPNFTUIF#BCFMPS
)PXBCPVUTVQQPSUJOH999
Slide 34
Slide 34 text
IUUQDBUCPSHKBSHPOIUNMJOEFYIUNM
Slide 35
Slide 35 text
8IFOPOFJTEFTJHOJOHUIFTVDDFTTPSUPBSFMBUJWFMZTNBMM
FMFHBOU
BOE
TVDDFTTGVMTZTUFN
UIFSFJTBUFOEFODZUPCFDPNFHSBOEJPTFJOPOFT
TVDDFTTBOEEFTJHOBOFMFQIBOUJOFGFBUVSFMBEFONPOTUSPTJUZ
5IFUFSNXBT
fi
STUVTFECZ'SFE#SPPLTJOIJTDMBTTJD5IF.ZUIJDBM.BO
.POUI&TTBZTPO4PGUXBSF&OHJOFFSJOH "EEJTPO8FTMFZ
ൺֱతখ͘͞ΤϨΨϯτͰޭΛऩΊͨγεςϜͷޙܧγεςϜΛઃܭ͢Δ߹
ʹɺͬͱޭ͠Α͏ͱࢥͬͯɺฒʢFMFQIBOUJOFʣͰػೳ͕Γͩ͘͞Μͷ
Խ͚Λઃܭͯ͠͠·͏߹͕͋Δɻ
͜ͷ༻ޠɺ'SFE#SPPLTͷ໊ஶʰਓ݄ͷਆʱͰॳΊͯΘΕͨɻ
IUUQDBUCPSHKBSHPOIUNM4TFDPOETZTUFNF
ff
FDUIUNM
TFDPOETZTUFNF
ff
FDU TZOESPNF
O
Slide 36
Slide 36 text
IUUQTMFBSOJOHPSFJMMZDPNMJCSBSZWJFXNZUIJDBMNBONPOUIUIF
Slide 37
Slide 37 text
"OBSDIJUFDUT
fi
STUXPSLJTBQUUPCFTQBSFBOEDMFBO)FLOPXTIFEPFTOULOPXXIBUIFTEPJOH
TPIFEPFTJUDBSFGVMMZBOEXJUIHSFBUSFTUSBJOU"TIFEFTJHOTUIF
fi
STUXPSL
GSJMMBGUFSGSJMMBOE
FNCFMMJTINFOUBGUFSFNCFMMJTINFOUPDDVSUPIJN5IFTFHFUTUPSFEBXBZUPCFVTFEOFYUUJNF
ΞʔΩςΫτɺ࠷ॳͷࣄͰɺ੍ࣗͯ͠աͳͷΛ͚Ճ͑ͳ͍͜ͱ͕ଟ͍ɻࣗͰԿΛ͍ͯ͠Δͷ
͔͕͔Βͳ͍͜ͱΛೝ͍ࣝͯ͠ΔͷͰɺԿࣄ৻ॏ͔ͭेͳઅΛͬͯߦ͏ɻ࠷ॳͷࣄΛσβΠϯ
͍ͯ͘͠ͱ͖ɺ͔࣍Β࣍ͱϑϦϧΒ০ΓΒ༨ܭͳͷ͕ࢥ͍ු͔ΜͰ͘Δͷ͕ͩɺͦΕʮ࣍ճʯ
͓͏ͱऔ͓ͬͯ͘ɻ
4PPOFSPSMBUFSUIF
fi
STUTZTUFNJT
fi
OJTIFE
BOEUIFBSDIJUFDU
XJUI
fi
SNDPO
fi
EFODFBOEB
EFNPOTUSBUFENBTUFSZPGUIBUDMBTTPGTZTUFNT
JTSFBEZUPCVJMEBTFDPOETZTUFN
ͦ͏͜͏͢Δ͏ͪʹ࠷ॳͷγεςϜ͕ͯ͠ɺΞʔΩςΫτʹ֬ݻͨΔࣗ৴ͱͦͷखͷΫϥεͷγες
Ϝʹର͢Δܦݧ͕උΘΓɺೋͷγεςϜͷ։ൃͷ४උ͕Ͱ͖Δɻ
IUUQTMFBSOJOHPSFJMMZDPNMJCSBSZWJFXNZUIJDBMNBONPOUIUIF
fi
STUXPSLJTBQUUPCFTQBSFBOEDMFBO
Slide 38
Slide 38 text
5IJTTFDPOEJTUIFNPTUEBOHFSPVTTZTUFNBNBOFWFSEFTJHOT
͜ͷೋͷγεςϜͦ͜ɺσβΠϯ͢Δͷͷ͏ͪͰ࠷ةݥͳͷͰ͋Δɻ
5IFHFOFSBMUFOEFODZJTUPPWFSEFTJHOUIFTFDPOETZTUFN
VTJOHBMMUIF
JEFBTBOEGSJMMTUIBUXFSFDBVUJPVTMZTJEFUSBDLFEPOUIF
fi
STUPOF5IF
SFTVMU
BT0WJETBZT
JTBCJHQJMF
ҰൠతʹɺೋͷγεςϜΛσβΠϯ͠ա͗Δ͕͋Δɻ͜ͷͱ͖ɺ࠷ॳͷ
γεςϜσβΠϯͰҙਂ͘֎ͨ͋͠ΒΏΔΞΠσΞͱ০Λ͏ɻ݁ՌΦ
ϏσΟεͷݴͬͨΑ͏ʹʮࢁʯͱͳΔɻ
IUUQTMFBSOJOHPSFJMMZDPNMJCSBSZWJFXNZUIJDBMNBONPOUIUIF
5IFHFOFSBMUFOEFODZJTUPPWFSEFTJHOUIFTFDPOETZTUFN
Slide 39
Slide 39 text
No content
Slide 40
Slide 40 text
*GUIFSFJTO`UBTJNQMFTPMVUJPOUPBQSPCMFN
JOUFSSPHBUFUIFQSPCMFN
CFGPSFZPVBDDFQUBDPNQMJDBUFETPMVUJPO*TUIFQSPCMFNZPV`SFUSZJOH
UPTPMWFBDUVBMMZUIFQSPCMFNUIBUOFFETTPMWJOH 0SBSFZPVNBLJOH
VOOFDFTTBSZBTTVNQUJPOTBCPVUUIFQSPCMFNUIBUBSFDPNQMJDBUJOH
ZPVSTPMVUJPO
ʹ୯७ͳղ๏͕ଘࡏ͠ͳ͍ΜͩͬͨΒɺෳࡶͳղ๏Λड͚ೖΕΔલʹɺ
ʹର͠ɺ͍Λ͔͚͛ͯݕ౼ͯ͠ΈΔ͖ͩɻղ͜͏ͱ͍ͯ͠Δͦͷ
ɺຊʹղ͖͘ͳΜͩΖ͏͔ɻ͋Δ͍ɺղ๏Λෳࡶʹ͢ΔΑ͏
ͳɺʹؔ͢ΔෆཁͳԾఆΛઃ͚ͯ͠·͍ͬͯͳ͍ͩΖ͏͔ɻ
IUUQTMFBSOJOHPSFJMMZDPNMJCSBSZWJFXUIFSVMFTPG
4PNFUJNFT*U`T#FUUFSUP4JNQMJGZUIF1SPCMFN3BUIFSUIBOUIF4PMVUJPO
Slide 41
Slide 41 text
-FUTSFEFTJHOUIFUIJSETZTUFN
Slide 42
Slide 42 text
#MBOLTJOUIFBTTFSUJPOFYQSFTTJPO
assert(truthy === falsy);
Slide 43
Slide 43 text
.BLFUIFGPMMPXJOHTJNQMFBTTVNQUJPOT
Լهͷ؆୯ͳલఏΛ͓͘
w5SBOTQJMFSTIBWFBDDFTTUPUIFDPEFJUTFMG
w.PTUBTTFSUJPOTBSFXSJUUFOPOBTJOHMFMJOF
wτϥϯεύΠϥίʔυͦͷͷʹΞΫηεͰ͖Δ
w΄ͱΜͲͷBTTFSUJPOҰߦͰॻ͔Ε͍ͯΔ
#MBOLTJOUIFBTTFSUJPOFYQSFTTJPO"5IJSE4ZTUFN4PMVUJPO
Slide 44
Slide 44 text
5IFBTTFSUJPOMJOFDBOCFDVUPVUPGUIFDPEF
5IFQPTJUJPODBOCFEFUFSNJOFEBUUSBOTQJMFUJNF
5IFDBQUVSFEQPTJUJPOJTUIFQPTJUJPOJOUIFBTTFSUJPOTUSJOH
TPOPOFFEUP
QBSTFPSUSBWFSTFBUSVOUJNF
BTTFSUJPOߦίʔυ͔ΒΓग़ͤྑ͍
ҐஔτϥϯεύΠϧ࣌ʹ֬ఆͰ͖Δ
Ωϟϓνϟ͞ΕͨҐஔ͢ͳΘͪද໌ࣜจࣈྻͷதͷҐஔʹͳΔͷͰɺ࣮ߦ࣌ʹ
QBSTFUSBWFSTFෆཁʹͳΔ
#MBOLTJOUIFBTTFSUJPOFYQSFTTJPO"5IJSE4ZTUFN4PMVUJPO
Slide 45
Slide 45 text
.VMUJMJOFBTTFSUJPOFYQSFTTJPOT
assert(truthy
===
falsy);
Slide 46
Slide 46 text
4UPQDBOPOJDBMJ[JOHBTTFSUJPOFYQSFTTJPOTUIBUTQBOTNVMUJQMFMJOFT
*OTUFBE
QBTTDBQUVSFEWBMVFTUPUIFUFTUSVOOFSBTBDUVBMFYQFDUFE
ෳߦʹ·͕ͨΔද໌ࣜͷਖ਼نԽΛΊΔ
ͦͷ͔ΘΓʹɺΩϟϓνϟͨ͠ΛBDUVBMFYQFDUFEͱͯ͠ςετϥϯ
φʔʹ͢
.VMUJMJOFBTTFSUJPOFYQSFTTJPOT"5IJSE4ZTUFN4PMVUJPO
Slide 47
Slide 47 text
4USJOHXJEUIPG&NPKJT
const family = '👨👩';
const falsy = 0;
assert(family === falsy);
Slide 48
Slide 48 text
*UJTEJ
ff i
DVMUUPBDDVSBUFMZDBMDVMBUFUIFXJEUIPGBTUSJOH
+VTUVTFPOFMJOFGPSFBDITUSJOH
จࣈྻͷ෯Λਖ਼֬ʹܭࢉ͢Δͷ͍͠
จࣈྻͻͱͭຖʹҰߦ͑ྑ͍
4USJOHXJEUIPG&NPKJT"5IJSE4ZTUFN4PMVUJPO
Slide 49
Slide 49 text
8IZOPUKVTUVTFUIJTEFTJHOGSPNUIFCFHJOOJOH
࠷ॳ͔Β͜ͷઃܭʹ͢Εྑ͔ͬͨͷͰʁ
Slide 50
Slide 50 text
)PXEPFTUIFBSDIJUFDUBWPJEUIFTFDPOETZTUFNF
ff
FDU 8FMM
PCWJPVTMZIFDBOU
TLJQIJTTFDPOETZTUFN#VUIFDBOCFDPOTDJPVTPGUIFQFDVMJBSIB[BSETPGUIBU
TZTUFN
BOEFYFSUFYUSBTFMGEJTDJQMJOFUPBWPJEGVODUJPOBMPSOBNFOUBUJPOBOEUP
BWPJEFYUSBQPMBUJPOPGGVODUJPOTUIBUBSFPCWJBUFECZDIBOHFTJOBTTVNQUJPOTBOE
QVSQPTFT
ΞʔΩςΫτɺͲͷΑ͏ʹͯ͠ηΧϯυγεςϜީ܈Λճආ͢ΕΑ͍ͩΖ͏͔ɻ
ͱ͔͘ɺೋͷγεςϜΛεΩοϓ͢Δ͜ͱͰ͖ͳ͍ɻ͕ɺ
ηΧϯυγεςϜݻ༗ͷةݥੑʹҙͯ͠ɺػೳΛ০Γ͚ͨΓɺ
લఏతͷมԽʹΑͬͯෆཁʹͳͬͯ͠·͏ػೳΛิͬͨΓ͠ͳ͍Α͏ɺ
े੍ࣗ৺Λ͑Δ͜ͱՄೳͰ͋Δɻ
IUUQTMFBSOJOHPSFJMMZDPNMJCSBSZWJFXNZUIJDBMNBONPOUIUIF
$BOUTLJQTFDPOETZTUFN
Slide 51
Slide 51 text
)PXEPZPVCVJMEUIF5IJSE4ZTUFN
ͲͷΑ͏ʹ͢ΕɺୈࡾͷγεςϜΛ࡞ΕΔͷͩΖ͏͔ʁ
:PVCVJMEUIFPUIFSUXPTZTUFNT
fi
STU5IFSFJTOPPUIFSXBZ
࠷ॳʹଞͷೋͭͷγεςϜΛ࡞ΔͷͩɻͦΕҎ֎ͷํ๏ͳ͍ɻ
IUUQTXXXBNB[PODPKQ6/*91IJMPTPQIZ.JLF(BODBS[EQ
)PXEPZPVCVJMEUIF5IJSE4ZTUFN
Slide 52
Slide 52 text
5IFNPTUJNQPSUBOUBOEFMVTJWFTLJMMJTEFWFMPQJOHKVEHFNFOUBCPVU
TZTUFNEFTJHOTPZPVDBODIPPTFTPMVUJPOTUIBUBSFBTTJNQMFBT
QPTTJCMF
CVUOPTJNQMFS5IJTJTWFSZIBSEUPUFBDIBOEMFBSOFE
NPTUMZUISPVHIFYQFSJFODF
Ұ൪ॏཁͰҰ൪͔͍ͬͳεΩϧγεςϜΛઃܭ͢ΔͨΊͷஅྗͩɻ
ݶΓͳ͘γϯϓϧ͕ͩγϯϓϧ͗͢ͳ͍σβΠϯ BTTJNQMFBTQPTTJCMF
CVUOPTJNQMFS
ͱ͍͏ͷͳ͔ͳ͔ڭ͑ΒΕΔͷͰͳ͘ɺ
େํܦݧΛॏͶ֮ͯ͑Δͷͩɻ
BTTJNQMFBTQPTTJCMF
CVUOPTJNQMFS
IUUQTXXXRVPSBDPN)PXEJE&WBO1SJFTUMFZMFBSOUPQSPHSBN
Slide 53
Slide 53 text
0OFNPSFUIJOH
Slide 54
Slide 54 text
No content
Slide 55
Slide 55 text
ᦲ*OUFSTFDUJOH)JHIXBZ
(SPVOEXIJDIGPSNTUIFLFZUPUISFFDPOUJHVPVTTUBUFT
TPUIBUIF
XIPPDDVQJFTJU
fi
STUIBTNPTUPGUIF&NQJSFBUIJTDPNNBOE
JTB
HSPVOEPGJOUFSTFDUJOHIJHIXBZT
ॾިͷྖʹࡾํͰ௨͍ͯͯ͡ɺͦ͜ʹઌʹԡ͑͞Εॾࠃͱ௨ͯ͡ࢧ࣋
ࢧԉΛಘΒΕΔॴ͕ʮᦲʢͪ͘ʣʯͰ͋Δɻ
Slide 56
Slide 56 text
IUUQT[FOOEFWOBLBBLJTUBSUJDMFTCG
8IFSFJTUIFJOUFSTFDUJOHIJHIXBZ
Slide 57
Slide 57 text
IUUQTMFBSOJOHPSFJMMZDPNMJCSBSZWJFXQSPHSBNNJOHSVTUOE
&OUFSUIF3VTUXPSME
Slide 58
Slide 58 text
IUUQTMFBSOJOHPSFJMMZDPNMJCSBSZWJFXQSPHSBNNJOHSVTUOE
1SPHSBNNJOH3VTU
OE&EJUJPO
0VSHPBMXBTUPUBDLMFUIFCJH
OFXDPODFQUTJO3VTUVQGSPOUBOE
IFBEPO
QSFTFOUJOHUIFNDMFBSMZBOEJOEFQUITPBTUPNJOJNJ[F
MFBSOJOHCZUSJBMBOEFSSPS
ΘΕΘΕͷతɺ3VTUͷେ͖ͯ͘৽͍͠ίϯηϓτʹ
ਖ਼໘͔ΒऔΓΈɺ໌շʹɺͦͯ͠ৄࡉʹઆ໌͢Δ͜ͱͰɺ
ࢼߦࡨޡͰͷֶशΛ࠷খݶʹ͢Δ͜ͱͩɻ
Slide 59
Slide 59 text
0OFNPSFUIJOH
Slide 60
Slide 60 text
*TV
ff
FSFEGSPNUIFUZQJDBMTFDPOETZTUFNTZOESPNFJOUIFEFWFMPQNFOUPGNZPXO
044QSPEVDUT
FTQFDJBMMZQPXFSBTTFSU
*XJMMFYQMBJOXIBUTFDPOETZTUFNTZOESPNFJTBOEIPXUPSFDPWFSGSPNJU
CBTFEPONZ
PXOFYQFSJFODF
ࣗ࡞044ϓϩμΫτɺಛʹQPXFSBTTFSUͷ։ൃʹ͓͍ͯయܕతͳʮηΧϯυγεςϜγϯυ
ϩʔϜʯʹጶױ͠·ͨ͠ɻʮηΧϯυγεςϜγϯυϩʔϜʯͱԿ͔ɺͲ͏͔ͬͯͦ͜ΒϦΧ
όϦʔ͢Δ͔ɺࣗͷମݧΛϕʔεʹઆ໌͠·͢ɻ
*OBEEJUJPO
BOFXWFSTJPOXJMMCFSFMFBTFEPOUIFTBNFEBZ
͋Θͤͯɺ৽͍͠όʔδϣϯΛϦϦʔε͢Δ༧ఆͰ͢
BCTUSBDU
Slide 61
Slide 61 text
*TV
ff
FSFEGSPNUIFUZQJDBMTFDPOETZTUFNTZOESPNFJOUIFEFWFMPQNFOUPGNZPXO
044QSPEVDUT
FTQFDJBMMZQPXFSBTTFSU
*XJMMFYQMBJOXIBUTFDPOETZTUFNTZOESPNFJTBOEIPXUPSFDPWFSGSPNJU
CBTFEPONZ
PXOFYQFSJFODF
ࣗ࡞044ϓϩμΫτɺಛʹQPXFSBTTFSUͷ։ൃʹ͓͍ͯయܕతͳʮηΧϯυγεςϜγϯυ
ϩʔϜʯʹጶױ͠·ͨ͠ɻʮηΧϯυγεςϜγϯυϩʔϜʯͱԿ͔ɺͲ͏͔ͬͯͦ͜ΒϦΧ
όϦʔ͢Δ͔ɺࣗͷମݧΛϕʔεʹઆ໌͠·͢ɻ
*OBEEJUJPO
BOFXWFSTJPOXJMMCFSFMFBTFEPOUIFTBNFEBZ
͋Θͤͯɺ৽͍͠όʔδϣϯΛϦϦʔε͢Δ༧ఆͰ͢
BCTUSBDU
Slide 62
Slide 62 text
Available Today
Slide 63
Slide 63 text
OQNJOTUBMM%!QPXFSBTTFSUFTN
PS
OQNJOTUBMM%TXDQMVHJOQPXFSBTTFSU
5IBOLZPV
Slide 64
Slide 64 text
5IBOLZPV