happo for npm 6.0.0

November 10, 2025Major

6.0.0

Major version. Check its notes for changes you have to act on before you upgrade.

The new happo v6.0.0 package is a modern, TypeScript-first rewrite that consolidates functionality from multiple legacy packages into a single, unified package. This migration brings several benefits:

Unified package: One package instead of multiple (happo.io, happo-cypress, happo-playwright, happo-plugin-storybook, happo-e2e, and happo-static)
TypeScript support: Built-in TypeScript support with full type definitions
Uses ES modules
Improved configuration: More flexible configuration file formats
Simplified target configuration: Plain object syntax instead of class-based targets

To migrate from the legacy Happo packages, follow the migration guide: https://docs.happo.io/docs/migrating-from-legacy-packages

What's Changed

Allow the async timeout duration to be configured per-example by @hassoncs in https://github.com/happo/happo/pull/228
Replace srcset parsing regex with parse-srcset package by @lencioni in https://github.com/happo/happo/pull/229
Replace old happo with new happo by @lencioni in https://github.com/happo/happo/pull/230
Replace webpack with vite for Storybook build by @lencioni in https://github.com/happo/happo/pull/232
Group Dependabot patch updates by @lencioni in https://github.com/happo/happo/pull/233
Bump the patches-and-minors group with 8 updates by @dependabot[bot] in https://github.com/happo/happo/pull/234
Fail orchestrate job when curl request fails by @lencioni in https://github.com/happo/happo/pull/237
Bump @types/archiver from 6.0.3 to 7.0.0 by @dependabot[bot] in https://github.com/happo/happo/pull/235
Bump @types/node from 22.18.6 to 24.9.1 by @dependabot[bot] in https://github.com/happo/happo/pull/236
Update node from 22 to 24 by @lencioni in https://github.com/happo/happo/pull/238
Bump @types/node from 24.9.1 to 24.9.2 in the patches-and-minors group by @dependabot[bot] in https://github.com/happo/happo/pull/239
Bump eslint-plugin-unicorn from 61.0.2 to 62.0.0 by @dependabot[bot] in https://github.com/happo/happo/pull/240
Remove min viewport 400px for edge by @trotzig in https://github.com/happo/happo/pull/242
Add freezeAnimations, set default to "last-frame" by @trotzig in https://github.com/happo/happo/pull/241
Fix decorator export path by @lencioni in https://github.com/happo/happo/pull/243
Update node 24.10.0 to 24.11.0 by @lencioni in https://github.com/happo/happo/pull/245
Add outgoingRequestHeaders by @trotzig in https://github.com/happo/happo/pull/246
Update storybook to v10 by @lencioni in https://github.com/happo/happo/pull/244
Handle signed URL path correctly in uploadAssets by @lencioni in https://github.com/happo/happo/pull/247
Bump the patches-and-minors group with 3 updates by @dependabot[bot] in https://github.com/happo/happo/pull/249
Always upload assets via signed URLs by @lencioni in https://github.com/happo/happo/pull/248
Bump jsdom from 27.0.1 to 27.1.0 in the patches-and-minors group by @dependabot[bot] in https://github.com/happo/happo/pull/250
Create iframe.html automatically for static integrations by @trotzig in https://github.com/happo/happo/pull/253
Ensure static package has iframe.html by @trotzig in https://github.com/happo/happo/pull/251
Bump the patches-and-minors group with 8 updates by @dependabot[bot] in https://github.com/happo/happo/pull/255
Add dir and charset to iframe.html by @lencioni in https://github.com/happo/happo/pull/254
Make README.md up-to-date by @trotzig in https://github.com/happo/happo/pull/256
Bump the patches-and-minors group with 5 updates by @dependabot[bot] in https://github.com/happo/happo/pull/257
Make beforeSha a non-null env attribute by @trotzig in https://github.com/happo/happo/pull/252
Rename static integration to custom integration by @lencioni in https://github.com/happo/happo/pull/258
Remove legacy BASE_BRANCH env var by @lencioni in https://github.com/happo/happo/pull/259
Bump the patches-and-minors group with 4 updates by @dependabot[bot] in https://github.com/happo/happo/pull/262
Add waitForContent to pages by @lencioni in https://github.com/happo/happo/pull/261
Use generated afterSha when local changes are stashed by @trotzig in https://github.com/happo/happo/pull/264
Add pages test integration by @trotzig in https://github.com/happo/happo/pull/263
Rename browserType to type by @lencioni in https://github.com/happo/happo/pull/260
Update happo e2e docs output by @lencioni in https://github.com/happo/happo/pull/266
Replace HAPPO_BASE_BRANCH with --baseBranch CLI arg by @lencioni in https://github.com/happo/happo/pull/265
Remove local snapshots from e2e by @lencioni in https://github.com/happo/happo/pull/267
Replace HAPPO_CHANGE_URL with --link by @lencioni in https://github.com/happo/happo/pull/268
Replace HAPPO_MESSAGE with --message by @lencioni in https://github.com/happo/happo/pull/269
Replace HAPPO_PREVIOUS_SHA and HAPPO_CURRENT_SHA with CLI args by @lencioni in https://github.com/happo/happo/pull/270
Replace HAPPO_GITHUB_BASE with --githubBase by @lencioni in https://github.com/happo/happo/pull/271
Replace HAPPO_FALLBACK_SHAS and HAPPO_FALLBACK_SHAS_COUNT with CLI args by @lencioni in https://github.com/happo/happo/pull/272
Replace HAPPO_AUTHOR with --authorEmail by @lencioni in https://github.com/happo/happo/pull/273
Replace HAPPO_BEFORE_SHA_TAG_MATCHER with --beforeShaTagMatcher by @lencioni in https://github.com/happo/happo/pull/274
Replace HAPPO_NOTIFY with --notify by @lencioni in https://github.com/happo/happo/pull/275
Replace HAPPO_NONCE with --nonce by @lencioni in https://github.com/happo/happo/pull/276
Change previousSha/currentSha to beforeSha/afterSha by @lencioni in https://github.com/happo/happo/pull/277
Remove HAPPO_BUILD_STORYBOOK_COMMAND by @lencioni in https://github.com/happo/happo/pull/278
Replace HAPPO_DOWNLOAD_ALL with config option by @trotzig in https://github.com/happo/happo/pull/279
Bump the patches-and-minors group with 3 updates by @dependabot[bot] in https://github.com/happo/happo/pull/282
Remove --githubBase CLI flag by @lencioni in https://github.com/happo/happo/pull/280
Replace archiver and adm-zip with fflate by @lencioni in https://github.com/happo/happo/pull/281
Handle HAPPO_GITHUB_TOKEN, HAPPO_DELETE_OLD_COMMENTS, VERBOSE env vars by @trotzig in https://github.com/happo/happo/pull/283
Set prefersReducedMotion to true by default by @lencioni in https://github.com/happo/happo/pull/284
Refactor Logger to use node's built-in styleText by @lencioni in https://github.com/happo/happo/pull/285
Stop using basename when zipping in-memory content by @lencioni in https://github.com/happo/happo/pull/286
Add error reporting by @lencioni in https://github.com/happo/happo/pull/287
Replace p-all with limit-concur by @lencioni in https://github.com/happo/happo/pull/288
Address code review for telemetry by @lencioni in https://github.com/happo/happo/pull/289

New Contributors

@hassoncs made their first contribution in https://github.com/happo/happo/pull/228

Full Changelog: https://github.com/happo/happo/compare/v5.0.3...v6.0.0

happo for npm release notes

6.0.0

What's Changed

New Contributors

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