mirror of https://github.com/CrimsonTome/tldr.git
21 lines
701 B
Markdown
21 lines
701 B
Markdown
# sg
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> Ast-grep is a tool for code structural search, lint, and rewriting.
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> More information: <https://ast-grep.github.io/guide/introduction.html>.
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- Scan for possible queries using interactive mode:
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`sg scan --interactive`
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- Rewrite code in the current directory using patterns:
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`sg run --pattern '{{foo}}' --rewrite '{{bar}}' --lang {{python}}`
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- Visualize possible changes without applying them:
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`sg run --pattern '{{useState<number>($A)}}' --rewrite '{{useState($A)}}' --lang {{typescript}}`
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- Output results as JSON, extract information using `jq` and interactively view it using `jless`:
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`sg run --pattern '{{Some($A)}}' --rewrite '{{None}}' --json | jq '{{.[].replacement}}' | jless`
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