Skip restore on default-branch builds by default#34
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Default-branch (e.g. main) pushes never restore. They publish a fresh full base bundle, which keeps it from growing without bound. Branches and PRs restore the base and publish a delta. Opinionated, no setting to override.
joshfriend
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| if (isDefaultBranchBuild()) { | ||
| core.info( | ||
| "Cache restore skipped — default-branch build publishes a fresh base bundle", | ||
| ); | ||
| return; |
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When a workflow sets branch explicitly for all runs (for example ${{ github.ref_name }} to enable deltas on direct branch pushes), this early return skips restore on the default branch but the post step still sees the explicit branch and takes the save-delta path. Because no restore marker was created, action/src/post.js logs No restore marker found and returns, so default-branch runs publish no fresh base bundle at all instead of the intended full save.
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Default-branch (e.g.
main) pushes never restore. They publish a fresh full base bundle, which keeps it from growing without bound. Branches and PRs restore the base and publish a delta.