[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M7397JD4W1ZMSD2000C76AMT":3,"skill-same:01M7397JD4W1ZMSD2000C76AMT":47},{"skillNo":4,"name":5,"nameZh":6,"description":6,"descriptionZh":6,"repositoryFullName":7,"ownerLogin":8,"ownerAvatarUrl":9,"ownerAccountNo":10,"ownerDisplayName":11,"repositoryNo":12,"starsCount":13,"licenseSpdxId":14,"licenseFileUrl":6,"sourceHtmlUrl":15,"categories":16,"keywords":17,"publishedAt":18,"linkOnly":19,"markdownContent":20,"markdownBody":21,"frontMatter":22,"refName":23,"commitSha":24,"skillDirectory":25,"forksCount":26,"repositoryHtmlUrl":27,"repositoryHomepageUrl":28,"ownerHtmlUrl":29,"ownerBlogUrl":30,"ownerDescription":31,"updatedAt":32,"install":33,"resources":46},"01M7397JD4W1ZMSD2000C76AMT","ast-codegen-patterns",null,"Horonomos-laps\u002FYana-AI","Horonomos-laps","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F355299122?v=4","01M76B3QPXE88ET2SQPDPVATZT"," Horonomos-laps","01M72ZQRJPCYPSSWT4D00VJR2A",13,"Apache-2.0","https:\u002F\u002Fgithub.com\u002FHoronomos-laps\u002FYana-AI\u002Fblob\u002Fmain\u002Fcore\u002Fskills\u002Fast-codegen-patterns\u002FSKILL.md",[],[],"2026-11-11 15:11:14",false,"---\nname: ast-codegen-patterns\ndescription: Code generation from AST back to source text. esotope-style compact code output, format-preserving reprint, and round-trip AST → source pipelines for codemods and refactoring tools. Sources: glaynge\u002Fesotope (BSD-2-Clause).\norigin: yana-ai — synthesized from glaynge\u002Fesotope (BSD-2-Clause), escodegen (BSD-2-Clause)\nlicense: Apache-2.0\nversion: 1.0.0\ncompatibility: yana-ai >= 1.3.49\n---\n\n# \u002Fast-codegen-patterns\n\n## When to Use\n\n- Regenerate source from a modified AST (after [[babel-ast-transform]] or [[estree-ast-spec]] walker)\n- Format-preserving reprints: preserve whitespace\u002Fcomments in unmodified subtrees\n- Round-trip pipelines: parse → mutate → generate → diff\n- Custom code generation: emit domain-specific patterns from data models\n\n## Do NOT use for\n\n- Full Babel transform pipelines (use [[babel-ast-transform]] which includes generate)\n- TypeScript codegen from scratch (use [[ts-morph-refactor]] for type-safe generation)\n\n---\n\n## ESTree → source (escodegen)\n\n```javascript\nimport escodegen from 'escodegen'\nimport { parse }  from 'acorn'\n\nconst source = `\nconst arr = [1, 2, 3]\nconst doubled = arr.map(x => x * 2)\n`\n\nconst ast = parse(source, { ecmaVersion: 2022, sourceType: 'module' })\n\n\u002F\u002F Mutate AST: rename 'doubled' → 'multiplied'\nfunction rename(node, from, to) {\n  if (!node || typeof node !== 'object') return\n  if (node.type === 'Identifier' && node.name === from) node.name = to\n  for (const key of Object.keys(node)) rename(node[key], from, to)\n}\nrename(ast, 'doubled', 'multiplied')\n\nconst output = escodegen.generate(ast, {\n  format: {\n    indent:    { style: '  ' },\n    quotes:    'single',\n    semicolons: true,\n  },\n  comment: true,   \u002F\u002F preserve comments from original\n})\n\nconsole.log(output)\n\u002F\u002F const arr = [1, 2, 3];\n\u002F\u002F const multiplied = arr.map(x => x * 2);\n```\n\n---\n\n## Source map–aware generation\n\n```javascript\nimport escodegen from 'escodegen'\nimport { SourceMapConsumer } from 'source-map'\n\nconst { code, map } = escodegen.generate(ast, {\n  sourceMap:         'input.js',\n  sourceMapWithCode: true,\n  format: { compact: false },\n})\n\n\u002F\u002F map is a SourceMapGenerator — serialize for output\nconst sourceMapString = map.toString()\nconst codeWithMap = code + '\\n\u002F\u002F# sourceMappingURL=data:application\u002Fjson;base64,'\n                       + Buffer.from(sourceMapString).toString('base64')\n```\n\n---\n\n## Manual AST builder (no parser needed)\n\n```javascript\n\u002F\u002F Build `export const VERSION = \"1.0.0\"` from scratch\nfunction buildVersionExport(version: string) {\n  return {\n    type: 'ExportNamedDeclaration',\n    declaration: {\n      type: 'VariableDeclaration',\n      kind: 'const',\n      declarations: [{\n        type: 'VariableDeclarator',\n        id:   { type: 'Identifier', name: 'VERSION' },\n        init: { type: 'Literal',    value: version, raw: JSON.stringify(version) },\n      }],\n    },\n    specifiers: [],\n    source: null,\n  }\n}\n\nconst program = {\n  type: 'Program',\n  body: [buildVersionExport('1.0.0')],\n  sourceType: 'module',\n}\n\nconsole.log(escodegen.generate(program))\n\u002F\u002F export const VERSION = '1.0.0';\n```\n\n---\n\n## Round-trip codemod helper\n\n```typescript\nimport { parse }   from 'acorn'\nimport escodegen   from 'escodegen'\n\nexport function codemod(\n  source:  string,\n  mutate:  (ast: any) => void,\n  options: escodegen.GenerateOptions = {}\n): string {\n  const ast = parse(source, {\n    ecmaVersion: 2022,\n    sourceType:  'module',\n    onComment:   (block, text, start, end) => {\n      \u002F\u002F attach comments to nearest node for escodegen to reprint\n    },\n  })\n  mutate(ast)\n  return escodegen.generate(ast, {\n    comment: true,\n    format: { indent: { style: '  ' }, ...options },\n  })\n}\n```\n\n---\n\n## Anti-Fake-Pass Checklist\n\n```\n❌ escodegen.generate on Babel AST → Babel adds non-ESTree nodes; strip them first\n❌ comment: false → all comments lost in round-trip\n❌ Mutating raw node.loc values → code generation uses loc for source maps; corruption\n❌ compact: true in a codemod → diffs become unreadable one-liners\n❌ Manual AST missing 'raw' field on Literal → some generators produce undefined\n❌ sourceMap: 'filename' must match the original filename exactly or stack traces break\n```\n","# \u002Fast-codegen-patterns\n\n## When to Use\n\n- Regenerate source from a modified AST (after [[babel-ast-transform]] or [[estree-ast-spec]] walker)\n- Format-preserving reprints: preserve whitespace\u002Fcomments in unmodified subtrees\n- Round-trip pipelines: parse → mutate → generate → diff\n- Custom code generation: emit domain-specific patterns from data models\n\n## Do NOT use for\n\n- Full Babel transform pipelines (use [[babel-ast-transform]] which includes generate)\n- TypeScript codegen from scratch (use [[ts-morph-refactor]] for type-safe generation)\n\n---\n\n## ESTree → source (escodegen)\n\n```javascript\nimport escodegen from 'escodegen'\nimport { parse }  from 'acorn'\n\nconst source = `\nconst arr = [1, 2, 3]\nconst doubled = arr.map(x => x * 2)\n`\n\nconst ast = parse(source, { ecmaVersion: 2022, sourceType: 'module' })\n\n\u002F\u002F Mutate AST: rename 'doubled' → 'multiplied'\nfunction rename(node, from, to) {\n  if (!node || typeof node !== 'object') return\n  if (node.type === 'Identifier' && node.name === from) node.name = to\n  for (const key of Object.keys(node)) rename(node[key], from, to)\n}\nrename(ast, 'doubled', 'multiplied')\n\nconst output = escodegen.generate(ast, {\n  format: {\n    indent:    { style: '  ' },\n    quotes:    'single',\n    semicolons: true,\n  },\n  comment: true,   \u002F\u002F preserve comments from original\n})\n\nconsole.log(output)\n\u002F\u002F const arr = [1, 2, 3];\n\u002F\u002F const multiplied = arr.map(x => x * 2);\n```\n\n---\n\n## Source map–aware generation\n\n```javascript\nimport escodegen from 'escodegen'\nimport { SourceMapConsumer } from 'source-map'\n\nconst { code, map } = escodegen.generate(ast, {\n  sourceMap:         'input.js',\n  sourceMapWithCode: true,\n  format: { compact: false },\n})\n\n\u002F\u002F map is a SourceMapGenerator — serialize for output\nconst sourceMapString = map.toString()\nconst codeWithMap = code + '\\n\u002F\u002F# sourceMappingURL=data:application\u002Fjson;base64,'\n                       + Buffer.from(sourceMapString).toString('base64')\n```\n\n---\n\n## Manual AST builder (no parser needed)\n\n```javascript\n\u002F\u002F Build `export const VERSION = \"1.0.0\"` from scratch\nfunction buildVersionExport(version: string) {\n  return {\n    type: 'ExportNamedDeclaration',\n    declaration: {\n      type: 'VariableDeclaration',\n      kind: 'const',\n      declarations: [{\n        type: 'VariableDeclarator',\n        id:   { type: 'Identifier', name: 'VERSION' },\n        init: { type: 'Literal',    value: version, raw: JSON.stringify(version) },\n      }],\n    },\n    specifiers: [],\n    source: null,\n  }\n}\n\nconst program = {\n  type: 'Program',\n  body: [buildVersionExport('1.0.0')],\n  sourceType: 'module',\n}\n\nconsole.log(escodegen.generate(program))\n\u002F\u002F export const VERSION = '1.0.0';\n```\n\n---\n\n## Round-trip codemod helper\n\n```typescript\nimport { parse }   from 'acorn'\nimport escodegen   from 'escodegen'\n\nexport function codemod(\n  source:  string,\n  mutate:  (ast: any) => void,\n  options: escodegen.GenerateOptions = {}\n): string {\n  const ast = parse(source, {\n    ecmaVersion: 2022,\n    sourceType:  'module',\n    onComment:   (block, text, start, end) => {\n      \u002F\u002F attach comments to nearest node for escodegen to reprint\n    },\n  })\n  mutate(ast)\n  return escodegen.generate(ast, {\n    comment: true,\n    format: { indent: { style: '  ' }, ...options },\n  })\n}\n```\n\n---\n\n## Anti-Fake-Pass Checklist\n\n```\n❌ escodegen.generate on Babel AST → Babel adds non-ESTree nodes; strip them first\n❌ comment: false → all comments lost in round-trip\n❌ Mutating raw node.loc values → code generation uses loc for source maps; corruption\n❌ compact: true in a codemod → diffs become unreadable one-liners\n❌ Manual AST missing 'raw' field on Literal → some generators produce undefined\n❌ sourceMap: 'filename' must match the original filename exactly or stack traces break\n```\n",{},"main","481dcd7dd2e288b9d627a2bd017db70e64e6c6fa","core\u002Fskills\u002Fast-codegen-patterns",2,"https:\u002F\u002Fgithub.com\u002FHoronomos-laps\u002FYana-AI","https:\u002F\u002Fyana.vutam.link\u002F","https:\u002F\u002Fgithub.com\u002FHoronomos-laps","https:\u002F\u002Fyana.vutam.link","An open-source governed runtime & execution environment for multi-agent AI systems.","2026-11-14 13:24:09",{"source":7,"skillName":5,"commands":34,"prompt":44,"zipAvailable":45},[35,38,41],{"tool":36,"command":37},"npx","npx skills add Horonomos-laps\u002FYana-AI --skill ast-codegen-patterns",{"tool":39,"command":40},"bunx","bunx skills add Horonomos-laps\u002FYana-AI --skill ast-codegen-patterns",{"tool":42,"command":43},"pnpm","pnpm dlx skills add Horonomos-laps\u002FYana-AI --skill ast-codegen-patterns","安装技能，技能地址：https:\u002F\u002Fgithub.com\u002FHoronomos-laps\u002FYana-AI\u002Fblob\u002Fmain\u002Fcore\u002Fskills\u002Fast-codegen-patterns\u002FSKILL.md",true,[],[48,56,63,71,79,87],{"skillNo":49,"name":50,"nameZh":6,"description":51,"descriptionZh":6,"repositoryFullName":7,"ownerLogin":8,"ownerAvatarUrl":9,"ownerAccountNo":10,"ownerDisplayName":11,"repositoryNo":12,"starsCount":13,"licenseSpdxId":52,"licenseFileUrl":6,"sourceHtmlUrl":53,"categories":54,"keywords":55,"publishedAt":18},"01M735GKET5YVYKAY62W2P5YXB","openai--sentry--sentry","Use when the user asks to inspect Sentry issues or events, summarize recent production errors, or pull basic Sentry health data via the Sentry API; 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Use for read-only basket comparison and gap analysis without investment advice or live trading.","https:\u002F\u002Fgithub.com\u002FHoronomos-laps\u002FYana-AI\u002Fblob\u002Fmain\u002Fcore\u002Fskills\u002Fito-basket-compare\u002FSKILL.md",[],[],{"skillNo":64,"name":65,"nameZh":6,"description":66,"descriptionZh":6,"repositoryFullName":7,"ownerLogin":8,"ownerAvatarUrl":9,"ownerAccountNo":10,"ownerDisplayName":11,"repositoryNo":12,"starsCount":13,"licenseSpdxId":14,"licenseFileUrl":67,"sourceHtmlUrl":68,"categories":69,"keywords":70,"publishedAt":18},"01M734CYEMZFDR3KH6SW0JP8TD","implementing-network-traffic-baselining","Build network traffic baselines from NetFlow\u002FIPFIX data using Python pandas for statistical analysis, z-score anomaly detection, and hourly\u002Fdaily traffic pattern profiling","https:\u002F\u002Fgithub.com\u002Fyanacuti1121\u002FYana-AI\u002Fblob\u002Fmain\u002F.claude\u002Fskills\u002Fimplementing-network-traffic-baselining\u002FLICENSE","https:\u002F\u002Fgithub.com\u002FHoronomos-laps\u002FYana-AI\u002Fblob\u002Fmain\u002F.claude\u002Fskills\u002Fimplementing-network-traffic-baselining\u002FSKILL.md",[],[],{"skillNo":72,"name":73,"nameZh":6,"description":74,"descriptionZh":6,"repositoryFullName":7,"ownerLogin":8,"ownerAvatarUrl":9,"ownerAccountNo":10,"ownerDisplayName":11,"repositoryNo":12,"starsCount":13,"licenseSpdxId":14,"licenseFileUrl":75,"sourceHtmlUrl":76,"categories":77,"keywords":78,"publishedAt":18},"01M73ASZ6NJRJM44Z2P84NGQ3Q","detecting-evasion-techniques-in-endpoint-logs","Detects defense evasion techniques used by adversaries in endpoint logs including log tampering, timestomping, process injection, and security tool disabling. Use when investigating suspicious endpoint behavior, building detection rules for evasion tactics, or conducting threat hunting for stealthy adversary activity. 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