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refactor(transformer): arrow function transform: remove unnecessary assertion #6002

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overlookmotel
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@overlookmotel overlookmotel commented Sep 23, 2024

This assertion was required previously for soundness, but now SparseStack::pop makes it impossible for self.this_var_stack.len() to be 0. Being exactly 1 is not a safety invariant, only that it's not 0.

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@github-actions github-actions bot added the A-transformer Area - Transformer / Transpiler label Sep 23, 2024
@overlookmotel overlookmotel marked this pull request as ready for review September 23, 2024 18:02
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My mistake retaining this assertion, so merging without review.

@overlookmotel overlookmotel added the 0-merge Merge with Graphite Merge Queue label Sep 23, 2024
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Merge activity

  • Sep 23, 2:04 PM EDT: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
  • Sep 23, 2:05 PM EDT: overlookmotel added this pull request to the Graphite merge queue.
  • Sep 23, 2:11 PM EDT: overlookmotel merged this pull request with the Graphite merge queue.

…ssertion (#6002)

This assertion was required previously for soundness, but now `SparseStack::pop` makes it impossible for `self.this_var_stack.len()` to be 0. Being exactly 1 is not a safety invariant, only that it's not 0.
@overlookmotel overlookmotel force-pushed the 09-23-refactor_transformer_arrow_function_transform_remove_unnecessary_assertion branch from b27d43e to f02bf51 Compare September 23, 2024 18:05
@graphite-app graphite-app bot merged commit f02bf51 into main Sep 23, 2024
26 checks passed
@graphite-app graphite-app bot deleted the 09-23-refactor_transformer_arrow_function_transform_remove_unnecessary_assertion branch September 23, 2024 18:11
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codspeed-hq bot commented Sep 23, 2024

CodSpeed Performance Report

Merging #6002 will not alter performance

Comparing 09-23-refactor_transformer_arrow_function_transform_remove_unnecessary_assertion (f02bf51) with main (2b17003)

Summary

✅ 29 untouched benchmarks

Boshen added a commit that referenced this pull request Sep 24, 2024
## [0.30.1] - 2024-09-24

### Features

- 5c323a2 minifier: Loop compressor passes (#6013) (Boshen)

### Bug Fixes

- 9ca202a codegen: Preserve newlines between comments (#6014) (Boshen)
- 4a99372 codegen: Print jsdoc comments for `TSEnumMember`s (#6007)
(camc314)
- 97a2c41 isolated-declarations: False positive for class private getter
with non-inferrable return type (#5987) (michaelm)

### Performance

- 2b17003 linter, prettier, diagnostics: Use `FxHashMap` instead of
`std::collections::HashMap` (#5993) (camchenry)
- 7b90d79 transformer: `SparseStack` always keep minimum 1 entry (#5962)
(overlookmotel)
- 28fe80a transformer: Logical assignment operator transform use
`SparseStack` (#5960) (overlookmotel)
- 9f7d4b7 transformer: Exponentiation operator transform use
`SparseStack` (#5959) (overlookmotel)
- 5dc0154 transformer: Nullish coalescing operator transform use
`SparseStack` (#5942) (overlookmotel)
- 618e89e transformer: Arrow function transform: reduce stack memory
usage (#5940) (overlookmotel)

### Documentation

- 5a0d17c ast: Document more AST nodes (#6000) (DonIsaac)
- 18371dd oxc: Include feature-guarded modules in docs.rs (#6012)
(DonIsaac)
- 1abfe8f semantic: Document `SymbolTable` (#5998) (DonIsaac)
- f5eee72 semantic: Correct docs for `Reference` (#5992) (overlookmotel)
- 860f108 transformer: Add to arrow functions transform docs (#5989)
(overlookmotel)

### Refactor

- 0a2f687 minifier: Move dce conditional expression to `RemoveDeadCode`
(#5971) (Boshen)
- f02bf51 transformer: Arrow function transform: remove unnecessary
assertion (#6002) (overlookmotel)

---------

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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