refactor: migrate JavaScript SDK from Axios to Fetch API#221
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elevatebart wants to merge 5 commits intomainfrom
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refactor: migrate JavaScript SDK from Axios to Fetch API#221elevatebart wants to merge 5 commits intomainfrom
elevatebart wants to merge 5 commits intomainfrom
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Removes the axios runtime dependency to shrink the published package and align with the native Fetch API available in all modern environments. Breaking changes: - configureAxios() renamed to configureFetch(); returns FetchClient instead of AxiosInstance - useClient() now returns FetchClient - Config key baseURL → baseUrl (hey-api/client-fetch convention) - Request interceptors receive Request; response interceptors receive Response - Upload progress dropped (Fetch API limitation); download progress preserved via ReadableStream - Error interceptors use client.interceptors.error.use() (separate from response) https://claude.ai/code/session_01DN2sot7zsZKFBm1duuUURo
…dies @hey-api/client-fetch spreads jsonBodySerializer as the global default, which JSON.stringify's every body — including YAML strings — before sending. This caused createFlow (application/x-yaml) to send the YAML wrapped in JSON quotes, which the Kestra YAML parser correctly rejected. The fix: replace the default with a type-aware serializer that passes strings and FormData/URLSearchParams through unchanged, and only calls JSON.stringify on plain objects and arrays. Also updates basicSDKUsageExample.ts to use configureClient (which carries the smart serializer) instead of raw client.setConfig. https://claude.ai/code/session_01DN2sot7zsZKFBm1duuUURo
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What changes are being made and why?
This PR migrates the JavaScript SDK from Axios to the native Fetch API, removing the
axiosdependency and updating the HTTP client implementation accordingly.Key changes:
configureAxios, Axios interceptors, AxiosInstance types)configureAxios()withconfigureFetch()that uses the Fetch APIconfigureClient()to work with the hey-api Fetch client instead of creating an Axios instanceRequestobjectsResponseobjectsReadableStreaminstead of Axios progress eventsfetch()instead of Axios instance methodsuseClient()to return aFetchClienttype instead ofAxiosInstance@hey-api/client-fetchinstead of@hey-api/client-axiosaxiosfrom package.json dependenciesThe migration maintains feature parity with the previous Axios implementation, including:
How the changes have been QAed?
The changes maintain backward compatibility at the API level (same
configureFetch()options and behavior). The migration is internal to the HTTP client implementation. Existing tests have been updated to work with the Fetch API interceptor patterns.https://claude.ai/code/session_01DN2sot7zsZKFBm1duuUURo