The Fellowship of the String
summary
Year-long migration replaces an unobservable getI18nString API with two functions requireString and formatString that throw on failure so errors are detectable at dev, build, and runtime. Tooling uses AST-based codemods (jscodeshift/ast-explorer) to cut thousands of calls down to a few hundred, plus an eslint no-restricted-syntax rule to warn in the IDE. Changes follow a strangler/Mikado approach, add production alerts for any remaining old calls, and culminate in safely removing the legacy function.
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chapters (11)
- 0:00Intro
- 0:46The Localization Function
- 1:06GetI18N String
- 5:40Legacy Modernization
- 7:43Define your problem
- 8:39Gather our voices
- 13:53Marketing
- 15:02Refactoring
- 17:20Codemods
- 21:56Manual Changes
- 23:52Conclusion
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