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sg: add page (#11445)

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Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
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marcel 2023-11-27 15:56:28 +01:00 • committed by GitHub
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# sg
> Ast-grep is a tool for code structural search, lint, and rewriting.
> More information: <https://ast-grep.github.io/guide/introduction.html>.
- Scan for possible queries using interactive mode:
`sg scan --interactive`
- Rewrite code in the current directory using patterns:
`sg run --pattern '{{foo}}' --rewrite '{{bar}}' --lang {{python}}`
- Visualize possible changes without applying them:
`sg run --pattern '{{useState<number>($A)}}' --rewrite '{{useState($A)}}' --lang {{typescript}}`
- Output results as JSON, extract information using `jq` and interactively view it using `jless`:
`sg run --pattern '{{Some($A)}}' --rewrite '{{None}}' --json | jq '{{.[].replacement}}' | jless`