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Generate JavaScript
From Goa Design
Shirou WAKAYAMA (@r_rudi)
Tsukinowa Inc.
Better
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Who?
• Twitter: r_rudi
• CTO at Tsukinowa Inc.
• Ansible / Sphinx
• 4 years Golang
• Server / FrontEnd / Infra / Android
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JS code generator: gen_js
• JS code generator already included.
• Hmm, it seems it does not have some of
features….
• generate from swagger also.
HPBKTEFYBNQMFEFTJHO
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goagen_js
• https://github.com/shirou/goagen_js
• It generates ES 2015 code.
• You need Babel to run Web Browser.
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QLHQBUIHJUIVCDPNTIJSPVHPBHFO@KT
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Sample Design
WBS@3FTPVSDF VTFS
GVOD
\
#BTF1BUI VTFS
"DUJPO HFU
GVOD
\
3PVUJOH (&5 6TFS*%
1BSBNT GVOD
\
1BSBN 6TFS*%
*OUFHFS
GVOD
\
.BYJNVN
^
3FRVJSFE 6TFS*%
^
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1. Explicit Method using
Promise API
6TFS(FU
VTFS*% OVNCFS
6TFS*%UPHFUJOGPSNBUJPO
FYQPSUGVODUJPO6TFS(FU VTFS*%
\
DPOTUVSMVSM1SFpYAVTFS\VTFS*%^A
DPOTUFWWBMJEBUF W6TFS(FUVTFS*%
VTFS*%
JG F
\
SFUVSO1SPNJTFSFKFDU F
^
SFUVSOHFU VSM
^ utility function
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2. Validation
• `
FYQPSUDPOTU6TFS(FU\
6TFS*%\
LJOEOVNCFS
NBYJNVN
^
^
WBMJEBUFDBOWBMJEBUFXJUITQFDJpFESVMFTFU
FYQPSUGVODUJPOWBMJEBUF SVMF
BDUVBM
\
TOJQ
^
Generated Rule
Validator function
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3. Type annotation
• flowtype
• typescript
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3. Typescript Example
6TFS(FU
VTFS*% OVNCFS
6TFS*%UPHFUJOGPSNBUJPO
FYQPSUGVODUJPO6TFS(FU VTFS*%OVNCFS
1SPNJTF6TFS.FEJB\
DPOTUVSMVSM1SFpYAVTFS\VTFS*%^A
MFUFWWBMJEBUF W6TFS(FUVTFS*%
VTFS*%
JG F
\
SFUVSO1SPNJTFSFKFDU F
^
SFUVSOHFU VSM
^
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Conclusion
• goagen_js can generate JS code with
1. Explicit Method Name with Promise
2. Validation
3. Type Annotation
• but still under heavy development.