[dependabot]

Bumps axios from 1.20.0 to 1.21.0.

Release notes

Sourced from axios's releases.

v1.21.0 — October 21, 2026

This release adds response timing and opt-in UTF-8 Basic authentication, improves request handling across runtimes, and changes how header defaults are recognized.

⚠️ Breaking Changes & Deprecations

• Header Defaults: Only plain objects, null-prototype maps, and compatible AxiosHeaders instances are treated as common or method-specific defaults; literal headers such as Link are now preserved. Applications using custom class instances as defaults must convert them to plain maps, for example { post: { ...customDefaults } }, or compatible AxiosHeaders. Otherwise, those instances become literal header values, including on requests using other methods. (#11156)

🚀 New Features

• Response Timing: Added response.duration, in milliseconds, including on error.response when present. Timing measures adapter execution and excludes interceptors and transforms; streamed responses stop timing when the stream becomes available. Axios replaces any existing duration value supplied by a custom adapter. (#11214)
• UTF-8 Basic Authentication: Added transitional.encodeBasicAuthUsername: true to support Unicode usernames in XHR and Fetch requests. The option defaults to false, preserving existing authentication behavior; applications opting in should supply the original Unicode username and remove manual pre-encoding workarounds. (#11159)

🐛 Bug Fixes

• Fetch Compatibility: Restored requests in runtimes such as Cloudflare Workers that reject the implicit cache: 'default', while preserving explicit caller settings. Response-size failures now retain their original ERR_BAD_RESPONSE and request context when runtime wrappers replace the underlying stream error. (#11194, #11179)
• Runtime Consistency: Aligned encoded-byte size accounting, multipart uploads, proxy routing, same-origin resolution, parameter merging, and form serialization across adapters. Circular parameters now reject with ERR_BAD_OPTION_VALUE, and sparse or non-index numeric form fields serialize as keyed objects. With proxy: false, native proxyEnv agents using unsupported pool-management or TLS-session lifecycle overrides now reject with ERR_BAD_OPTION_VALUE; construct those agents without proxyEnv. (#11242)
• Header Handling: Preserved headers named __proto__ using safe casing without changing the AxiosHeaders instance prototype. Function matchers in has(), delete(), and clear() now receive the headers instance as this, matching their declared contract. (#11134, #11216)
• URL and Data URL Parsing: Accepted case-insensitive supported URL schemes and Base64 markers, and corrected decoding of percent-encoded Base64 data URLs. Node data URL allocation estimates remain aligned with decoding so configured size limits apply before allocation. (#11138, #11163, #11294)
• Error Diagnostics: Preserved short reconstructed request stacks and appended wrapped error stacks under Caused by: so tooling that reads only error.stack retains the original failure context. (#11132, #11142)
• Interceptor Removal: Restored removal through canonical numeric-string interceptor IDs, including after registry compaction. (#11139)
• Proxy TLS: HTTPS CONNECT tunnels now apply current origin TLS options from an explicit httpsAgent, or from https.globalAgent when no explicit agent is supplied. This preserves process-wide custom CA settings through proxy tunnels. (#11178)
• XHR Lifecycle: Used asynchronous Cookie Store reads for XSRF tokens where supported, preserving cookie fallback, timeout accounting, and cancellation. Upload and download progress listeners are now removed on completion, failure, timeout, and cancellation. (#11166, #11225)
• HTTP/2 Sessions: Stopped reusing sessions immediately after GOAWAY and prevented draining sessions from scheduling idle timers that could delay process exit. (#11210)
• TypeScript Declarations: Exposed the response-default marker as a public type to resolve TS2527 when consumers emit declarations involving unresolved response generics, covering both ESM and CommonJS. (#11125)

🔧 Maintenance & Chores

• Configuration Performance: Reduced request configuration merge overhead, particularly for requests with many headers, while preserving merge semantics and prototype-pollution guards. (#11208)
• Same-Origin Checks: Removed obsolete Internet Explorer detection without changing origin decisions in supported environments. (#11174)
• Dependencies: Updated follow-redirects to 1.16.1 and refreshed development, documentation, test, and GitHub Actions dependencies. Removed unused dayjs from the docs package, root chalk, and chai from CJS module tests. (#11169, #11188, #11189, #11195, #11212, #11213, #11218, #11220, #11221, #11230, #11234, #11244, #11245, #11266, #11267, #11268, #11269, #11270, #11271, #11272, #11298, #11302, #11303, #11304, #11305, #11306, #11313, #11321, #11322, #11323, #11342)
• Documentation: Fixed interceptor test links, updated README CDN examples to the published 1.20.0 bundle, and corrected guidance on interceptor options and request lifecycle ordering. (#11228, #11149, #11335)
• Contributor Workflow: Consolidated agent instructions in AGENTS.md, standardized PR labels, required prerelease notes and validation evidence, and clarified that npm test requires installed Playwright browsers. (#11238, #11273, #11223, #11284)
• Sponsors and Support: Added HeroDevs, Code for Japan, and Sweepico sponsor listings, refreshed sponsor data, and documented extended security support for Axios v0. (#11222, #11249, #11252, #11341)
• Proxy Regression Coverage: Added a long dotted request-hostname test for NO_PROXY handling, extending coverage of an existing denial-of-service fix. (#11235)
• Release Preparation: Updated package version metadata for 1.21.0. (#11346)

🌟 New Contributors

Welcome to our 24 new contributors. Thank you for helping improve Axios:

• @​lazerg (#11194)
• @​QIU-Guanzong (#11228)
• @​Iams4kura (#11125)
• @​vjymisal0 (#11179)
• @​jarrensj (#11238)
• @​LineGu (#11132)
• @​luantaraschi (#11134)
• @​Cyberhet (#11284)
• @​nyxst4ck (#11138)

... (truncated)

Changelog

Sourced from axios's changelog.

v1.21.0 — October 21, 2026

This release adds response timing and opt-in UTF-8 Basic authentication, improves request handling across runtimes, and changes how header defaults are recognized.

⚠️ Breaking Changes & Deprecations

• Header Defaults: Only plain objects, null-prototype maps, and compatible AxiosHeaders instances are treated as common or method-specific defaults; literal headers such as Link are now preserved. Applications using custom class instances as defaults must convert them to plain maps, for example { post: { ...customDefaults } }, or compatible AxiosHeaders. Otherwise, those instances become literal header values, including on requests using other methods. (#11156)

🚀 New Features

• Response Timing: Added response.duration, in milliseconds, including on error.response when present. Timing measures adapter execution and excludes interceptors and transforms; streamed responses stop timing when the stream becomes available. Axios replaces any existing duration value supplied by a custom adapter. (#11214)
• UTF-8 Basic Authentication: Added transitional.encodeBasicAuthUsername: true to support Unicode usernames in XHR and Fetch requests. The option defaults to false, preserving existing authentication behavior; applications opting in should supply the original Unicode username and remove manual pre-encoding workarounds. (#11159)

🐛 Bug Fixes

• Fetch Compatibility: Restored requests in runtimes such as Cloudflare Workers that reject the implicit cache: 'default', while preserving explicit caller settings. Response-size failures now retain their original ERR_BAD_RESPONSE and request context when runtime wrappers replace the underlying stream error. (#11194, #11179)
• Runtime Consistency: Aligned encoded-byte size accounting, multipart uploads, proxy routing, same-origin resolution, parameter merging, and form serialization across adapters. Circular parameters now reject with ERR_BAD_OPTION_VALUE, and sparse or non-index numeric form fields serialize as keyed objects. With proxy: false, native proxyEnv agents using unsupported pool-management or TLS-session lifecycle overrides now reject with ERR_BAD_OPTION_VALUE; construct those agents without proxyEnv. (#11242)
• Header Handling: Preserved headers named __proto__ using safe casing without changing the AxiosHeaders instance prototype. Function matchers in has(), delete(), and clear() now receive the headers instance as this, matching their declared contract. (#11134, #11216)
• URL and Data URL Parsing: Accepted case-insensitive supported URL schemes and Base64 markers, and corrected decoding of percent-encoded Base64 data URLs. Node data URL allocation estimates remain aligned with decoding so configured size limits apply before allocation. (#11138, #11163, #11294)
• Error Diagnostics: Preserved short reconstructed request stacks and appended wrapped error stacks under Caused by: so tooling that reads only error.stack retains the original failure context. (#11132, #11142)
• Interceptor Removal: Restored removal through canonical numeric-string interceptor IDs, including after registry compaction. (#11139)
• Proxy TLS: HTTPS CONNECT tunnels now apply current origin TLS options from an explicit httpsAgent, or from https.globalAgent when no explicit agent is supplied. This preserves process-wide custom CA settings through proxy tunnels. (#11178)
• XHR Lifecycle: Used asynchronous Cookie Store reads for XSRF tokens where supported, preserving cookie fallback, timeout accounting, and cancellation. Upload and download progress listeners are now removed on completion, failure, timeout, and cancellation. (#11166, #11225)
• HTTP/2 Sessions: Stopped reusing sessions immediately after GOAWAY and prevented draining sessions from scheduling idle timers that could delay process exit. (#11210)
• TypeScript Declarations: Exposed the response-default marker as a public type to resolve TS2527 when consumers emit declarations involving unresolved response generics, covering both ESM and CommonJS. (#11125)

🔧 Maintenance & Chores

• Configuration Performance: Reduced request configuration merge overhead, particularly for requests with many headers, while preserving merge semantics and prototype-pollution guards. (#11208)
• Same-Origin Checks: Removed obsolete Internet Explorer detection without changing origin decisions in supported environments. (#11174)
• Dependencies: Updated follow-redirects to 1.16.1 and refreshed development, documentation, test, and GitHub Actions dependencies. Removed unused dayjs from the docs package, root chalk, and chai from CJS module tests. (#11169, #11188, #11189, #11195, #11212, #11213, #11218, #11220, #11221, #11230, #11234, #11244, #11245, #11266, #11267, #11268, #11269, #11270, #11271, #11272, #11298, #11302, #11303, #11304, #11305, #11306, #11313, #11321, #11322, #11323, #11342)
• Documentation: Fixed interceptor test links, updated README CDN examples to the published 1.20.0 bundle, and corrected guidance on interceptor options and request lifecycle ordering. (#11228, #11149, #11335)
• Contributor Workflow: Consolidated agent instructions in AGENTS.md, standardized PR labels, required prerelease notes and validation evidence, and clarified that npm test requires installed Playwright browsers. (#11238, #11273, #11223, #11284)
• Sponsors and Support: Added HeroDevs, Code for Japan, and Sweepico sponsor listings, refreshed sponsor data, and documented extended security support for Axios v0. (#11222, #11249, #11252, #11341)
• Proxy Regression Coverage: Added a long dotted request-hostname test for NO_PROXY handling, extending coverage of an existing denial-of-service fix. (#11235)
• Release Preparation: Updated package version metadata for 1.21.0. (#11346)

🌟 New Contributors

Welcome to our 24 new contributors. Thank you for helping improve Axios:

• @​lazerg (#11194)
• @​QIU-Guanzong (#11228)
• @​Iams4kura (#11125)
• @​vjymisal0 (#11179)
• @​jarrensj (#11238)
• @​LineGu (#11132)
• @​luantaraschi (#11134)
• @​Cyberhet (#11284)
• @​nyxst4ck (#11138)

... (truncated)

Commits

• aa54a5e docs: remove cancelled sponsors from README (#11369)
• e6b79d9 chore(release): prepare release 1.21.0 (#11346)
• fceeb10 chore(deps-dev): bump the development_dependencies group with 4 updates (#11342)
• 7d15df3 docs: refresh sponsor data (#11341)
• 8d8e844 docs: correct interceptor options and request lifecycle guide (#11335)
• 326843a test(no-proxy): cover the request-hostname path with a long dotted host (#11235)
• e5195ec feat(core): expose request duration on the response (#11214)
• 8d415e6 fix(headers): bind matcher callbacks to the headers instance (#11216)
• b16dd77 fix(xhr): remove progress event listeners on request completion (#11225)
• 790b2ca chore(deps): bump the github-actions group with 3 updates (#11323)
• Additional commits viewable in compare view

[Copilot]

Copilot wasn't able to review any files in this pull request. Check if the Files changed in this pull request are included in default exclusions.

[Akanksha Jain (jainakanksha-msft)]

Copilot This PR was opened by Dependabot. Please take it the rest of the way before it's ready for human review:

1. Impact analysis — review the PR diff/description to identify what changed, including the package name and old → new version, then check where that dependency is actually used in the codebase, or whether it is unused, and summarize the potential impact.
2. Fix build/conflict issues — run npm ci --legacy-peer-deps, npm run build, and npm run lint; resolve any merge conflicts, build errors, or lint errors that surface.
3. Tests — add or update tests under tests/** to cover the changed usage, and make sure they meaningfully validate the change (not just re-assert the version bump).
4. Run the suite — run the relevant npm run test:* script(s) for the affected area (e.g. test:blob, test:queue, test:table) and keep fixing until they pass.
5. Changelog — Add a changelog entry only for changes that an Azurite user, operator, SDK developer, or extension user could reasonably observe. Exclude internal maintenance, testing, CI/CD, linting, and development dependency updates unless they result in a user-visible behaviour, compatibility, performance, or security improvement.
6. Comments — review any existing PR comments and review threads, including resolved/hidden ones, and address anything actionable.
7. Self-rate — rate this work 1-10 against: correctness, test coverage, changelog accuracy, build/lint health, and comment resolution.
8. Iterate — if it's not a 10, keep improving until it is before finishing.
9. Summary — your final response must use the following structure exactly (no free-form paragraph summary).

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[Copilot]

Copilot This PR was opened by Dependabot. Please take it the rest of the way before it's ready for human review:

1. Impact analysis — review the PR diff/description to identify what changed, i...

Impact and validation are complete. Axios is a production dependency used in Blob copy handlers and in Blob/Table integration-test clients. The existing suites exercise those Azurite paths, so I did not add a version-only test. npm ci --legacy-peer-deps, npm run build, and npm run lint passed; npm run test:blob passed (865 passing, 3 pending) and npm run test:table passed (461 passing, 1 pending). There are no merge conflicts. No changelog entry is appropriate for this internal dependency update. I reviewed the PR comments and review threads; there are no review threads, and the bot's inability-to-review note has no actionable request. The dependency advisory lookup found no axios vulnerabilities; npm ci reported 14 moderate findings in the broader dependency tree. No follow-up code change was needed beyond the existing lockfile bump, commit af02d09.

[Copilot]

Copilot wasn't able to review any files in this pull request. Check if the Files changed in this pull request are included in default exclusions.

[Akanksha Jain (jainakanksha-msft)]

Copilot This PR was opened by Dependabot. Please take it the rest of the way before it's ready for human review:

1. Impact analysis — review the PR diff/description to identify what changed, including the package name and old → new version, then check where that dependency is actually used in the codebase, or whether it is unused, and summarize the potential impact.
2. Fix build/conflict issues — run npm ci --legacy-peer-deps, npm run build, and npm run lint; resolve any merge conflicts, build errors, or lint errors that surface.
3. Tests — add or update tests under tests/** to cover the changed usage, and make sure they meaningfully validate the change (not just re-assert the version bump).
4. Run the suite — run the relevant npm run test:* script(s) for the affected area (e.g. test:blob, test:queue, test:table) and keep fixing until they pass.
5. Changelog — Add a changelog entry only for changes that an Azurite user, operator, SDK developer, or extension user could reasonably observe. Exclude internal maintenance, testing, CI/CD, linting, and development dependency updates unless they result in a user-visible behaviour, compatibility, performance, or security improvement.
6. Comments — review any existing PR comments and review threads, including resolved/hidden ones, and address anything actionable.
7. Self-rate — rate this work 1-10 against: correctness, test coverage, changelog accuracy, build/lint health, and comment resolution.
8. Iterate — if it's not a 10, keep improving until it is before finishing.
9. Summary — your final response must use the following structure exactly (no free-form paragraph summary).

Impact analysis

• Package:
• Old version:
• New version:
• Change Impact:

Build/Conflict Issues

• Commands:
• Result:

Tests

• Added:
• Updated:
• Result:

Run the Suite

• Commands:
• Status:

Changelog

• Entry:
• Location:

Comments

• Reviewed:
• Actions:

Self-Rate

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Summary

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• Risk of not taking change:

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.