30-seconds/30-seconds-of-code

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• Document behavior clearlyFor every snippet/glossary entry, the documentation must make the implementation’s behavior and constraints immediately clear—especially ...

  30-seconds/30-seconds-of-code Documentation Markdown docs 2020-09-16

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• Readable ES styleUse a consistent, readable JavaScript style that favors early exits, standard APIs, and lint-safe expressions—without sacrificing clarity...

  30-seconds/30-seconds-of-code Code Style Markdown app-frameworks 2020-09-22

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• Correct Algorithm ContractsFor algorithm/data-structure snippets, make correctness and the function contract explicit: don’t silently break edge cases, validate req...

  30-seconds/30-seconds-of-code Algorithms Markdown app-frameworks 2020-10-22

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• Consistent Null HandlingUse a consistent null/undefined policy and make it explicit in both type checks and call/return behavior. - **Guard before indexing/acces...

  30-seconds/30-seconds-of-code Null Handling Markdown app-frameworks 2019-12-09

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• Consistent, Clear IdentifiersUse naming that is consistent with the surrounding code/style, avoids ambiguity, and preserves semantic meaning—both in code and in docum...

  30-seconds/30-seconds-of-code Naming Conventions Markdown app-frameworks 2023-09-17

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• Document API contractsWhen publishing a function/snippet, explicitly define the API contract: (1) platform/runtime assumptions, (2) input shape and required ty...

  30-seconds/30-seconds-of-code API Markdown app-frameworks 2018-01-12

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• Reduce runtime overheadWhen optimizing performance, remove repeated work in hot paths: avoid per-call overhead, extra passes over the same data, and unnecessary...

  30-seconds/30-seconds-of-code Performance Optimization Markdown app-frameworks 2018-07-10

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• Async for slow workWhen code performs potentially slow CPU/crypto work, avoid blocking the event loop. Prefer a Promise/callback-based asynchronous wrapper ...

  30-seconds/30-seconds-of-code Concurrency Markdown app-frameworks 2018-09-02

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• Define error contractsWhen handling invalid input or terminal conditions, explicitly define and implement your error-handling contract. Avoid “surprising exits...

  30-seconds/30-seconds-of-code Error Handling Markdown app-frameworks 2018-01-31

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• Encapsulate Memoization CacheWhen implementing in-memory caching (e.g., memoization), use a `Map` for the cache and keep the cache implementation private. - Use `Map`...

  30-seconds/30-seconds-of-code Caching Markdown app-frameworks 2018-01-02

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