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🤖 This PR is maintained by Autoloop. Each accepted iteration adds a commit to this branch.
Program goal: Build tsb, a complete TypeScript port of pandas, one feature at a time. Program issue: #1 Current best metric: 137 pandas_features_ported
Iteration 295 — add Grouper class (pd.Grouper)
Adds src/groupby/grouper.ts implementing the Grouper helper class — the TypeScript equivalent of pandas.Grouper.
What's included:
Grouper class with key, level, freq, sort, closed, label, base options
parseFreq(freq) — parses frequency strings like "2h", "30min", "7D"
binFloor(tsMs, freq, closed) — floors a timestamp to a bin boundary for constant-ms frequencies
Grouper.binDate(date) — bins a Date value using the configured freq/closed/label/base
Full exports from src/groupby/index.ts and src/index.ts
Comprehensive test suite (tests/groupby/grouper.test.ts) with unit + property-based (fast-check) tests
The patch file is available in the agent artifact in the workflow run linked above.
To create a pull request with the changes:
# Download the artifact from the workflow run
gh run download 25117554579 -n agent -D /tmp/agent-25117554579
# Create a new branch
git checkout -b autoloop/build-tsb-pandas-typescript-migration
# Apply the patch (--3way handles cross-repo patches where files may already exist)
git am --3way /tmp/agent-25117554579/aw-autoloop-build-tsb-pandas-typescript-migration.patch
# Push the branch to origin
git push origin autoloop/build-tsb-pandas-typescript-migration
# Create the pull request
gh pr create --title '[Autoloop: build-tsb-pandas-typescript-migration]' --base main --head autoloop/build-tsb-pandas-typescript-migration --repo githubnext/tsessebe
tsb: pandas → TypeScript migration
🤖 This PR is maintained by Autoloop. Each accepted iteration adds a commit to this branch.
Program goal: Build
tsb, a complete TypeScript port of pandas, one feature at a time.Program issue: #1
Current best metric: 137
pandas_features_portedIteration 295 — add
Grouperclass (pd.Grouper)Adds
src/groupby/grouper.tsimplementing theGrouperhelper class — the TypeScript equivalent ofpandas.Grouper.What's included:
Grouperclass withkey,level,freq,sort,closed,label,baseoptionsparseFreq(freq)— parses frequency strings like"2h","30min","7D"binFloor(tsMs, freq, closed)— floors a timestamp to a bin boundary for constant-ms frequenciesGrouper.binDate(date)— bins aDatevalue using the configured freq/closed/label/basesrc/groupby/index.tsandsrc/index.tstests/groupby/grouper.test.ts) with unit + property-based (fast-check) testsplayground/grouper.html)Metric: 136 → 137 (
pandas_features_ported, +1)Note
This was originally intended as a pull request, but the git push operation failed.
Workflow Run: View run details and download patch artifact
The patch file is available in the
agentartifact in the workflow run linked above.To create a pull request with the changes:
Show patch preview (500 of 839 lines)