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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,203 @@ | ||
| /** | ||
| * 与えられたjsファイルのimport/requireを解析し、以下の条件に当てはまらないものがあれば警告を出力する： | ||
| * - Node.js 標準である | ||
| * - electron | ||
| * - try-catch内での明示的に許可されたパッケージ | ||
| * | ||
| * また、try-catch内での明示的に許可されたパッケージが使われていない場合も警告を出力する。 | ||
| * | ||
| * pnpm run check-suspicious-imports ./path/to/file.js のように単体でも実行可能。 | ||
| */ | ||
|
|
||
| import { builtinModules } from "module"; | ||
| import { styleText } from "util"; | ||
| import fs from "fs/promises"; | ||
| import yargs from "yargs"; | ||
| import { parse } from "acorn"; | ||
| import { ancestor as visitWithAncestor } from "acorn-walk"; | ||
| import { hideBin } from "yargs/helpers"; | ||
|
|
||
| const defaultAllowedModules = [ | ||
| ...builtinModules.map((m) => `node:${m}`), | ||
| "electron", | ||
| ]; | ||
|
|
||
| type Import = { | ||
| path: string; | ||
| isInsideTryCatch: boolean; | ||
| }; | ||
| export type CheckSuspiciousImportsOptions = { | ||
| allowedModules?: string[]; | ||
| allowedInTryCatchModules?: string[]; | ||
| list?: boolean; | ||
| }; | ||
| export function checkSuspiciousImports( | ||
| file: string, | ||
| jsContent: string, | ||
| options: CheckSuspiciousImportsOptions = {}, | ||
| ): void { | ||
| console.log(`Checking suspicious imports in ${file}...`); | ||
| const ast = parse(jsContent, { | ||
| ecmaVersion: "latest", | ||
| sourceType: "module", | ||
| }); | ||
|
|
||
| const allImports: Import[] = []; | ||
|
|
||
| const allowedModules = [ | ||
| ...defaultAllowedModules, | ||
| ...(options.allowedModules ?? []), | ||
| ]; | ||
| const allowedInTryCatchModules = options.allowedInTryCatchModules ?? []; | ||
|
|
||
| visitWithAncestor(ast, { | ||
| ImportDeclaration(node) { | ||
| const importPath = node.source.value; | ||
| if (typeof importPath === "string") { | ||
| allImports.push({ | ||
| path: importPath, | ||
| isInsideTryCatch: false, | ||
| }); | ||
| } | ||
| }, | ||
| CallExpression(node, _, ancestors) { | ||
| const isInsideTryCatch = ancestors.some( | ||
| (ancestor) => ancestor.type === "TryStatement", | ||
| ); | ||
| if (node.callee.type === "Identifier" && node.callee.name === "require") { | ||
| const importPath = | ||
| node.arguments[0].type === "Literal" && node.arguments[0].value; | ||
| if (typeof importPath === "string") { | ||
| allImports.push({ | ||
| path: importPath, | ||
| isInsideTryCatch, | ||
| }); | ||
| } | ||
| } | ||
| }, | ||
| }); | ||
|
|
||
| const normalizedImports: Import[] = []; | ||
| for (const importInfo of allImports) { | ||
| let path = importInfo.path; | ||
| if (builtinModules.includes(path) && !path.startsWith("node:")) { | ||
| path = `node:${path}`; | ||
| } | ||
| const existingImport = normalizedImports.find((i) => i.path === path); | ||
| if (existingImport) { | ||
| existingImport.isInsideTryCatch &&= importInfo.isInsideTryCatch; | ||
| } else { | ||
| normalizedImports.push({ | ||
| ...importInfo, | ||
| path, | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| const allowedImports = normalizedImports.filter((i) => | ||
| allowedModules.includes(i.path), | ||
| ); | ||
| const allowedInTryCatchImports = normalizedImports.filter( | ||
| (i) => | ||
| !allowedModules.includes(i.path) && | ||
| allowedInTryCatchModules.includes(i.path), | ||
| ); | ||
| const suspiciousImports = normalizedImports.filter( | ||
| (i) => | ||
| !allowedModules.includes(i.path) && | ||
| !allowedInTryCatchModules.includes(i.path), | ||
| ); | ||
|
|
||
| for (const [color, title, imports] of [ | ||
| ["green", "Allowed", allowedImports], | ||
| ["yellow", "Allowed in try-catch", allowedInTryCatchImports], | ||
| ["red", "Suspicious", suspiciousImports], | ||
| ] as const) { | ||
| if (options.list) { | ||
| console.log(styleText(color, ` ${title}:`)); | ||
| for (const i of imports) { | ||
| console.log(styleText(color, ` ${i.path}`)); | ||
| } | ||
| if (imports.length === 0) { | ||
| console.log(styleText(color, ` (none)`)); | ||
| } | ||
| } else { | ||
| console.log(styleText(color, ` ${title}: ${imports.length}`)); | ||
| } | ||
| } | ||
|
|
||
| if (suspiciousImports.length > 0) { | ||
| throw new Error( | ||
| `Suspicious imports found: ${suspiciousImports | ||
| .map((i) => i.path) | ||
| .join(", ")}`, | ||
| ); | ||
| } | ||
|
|
||
| const unusedAllowedInTryCatchModules = allowedInTryCatchModules.filter( | ||
| (m) => !allowedInTryCatchImports.some((i) => i.path === m), | ||
| ); | ||
| if (options.list) { | ||
| console.log(styleText("yellow", ` Unused allowed in try-catch modules:`)); | ||
| for (const m of unusedAllowedInTryCatchModules) { | ||
| console.log(styleText("yellow", ` ${m}`)); | ||
| } | ||
| if (unusedAllowedInTryCatchModules.length === 0) { | ||
| console.log(styleText("yellow", ` (none)`)); | ||
| } | ||
| } else { | ||
| console.log( | ||
| styleText( | ||
| "yellow", | ||
| ` Unused allowed in try-catch modules: ${unusedAllowedInTryCatchModules.length}`, | ||
| ), | ||
| ); | ||
| } | ||
| if (unusedAllowedInTryCatchModules.length > 0) { | ||
| throw new Error( | ||
| `Some allowed in try-catch modules are not used in try-catch block: ${unusedAllowedInTryCatchModules.join( | ||
| ", ", | ||
| )}`, | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| if (import.meta.filename === process.argv[1]) { | ||
| const parser = yargs(hideBin(process.argv)) | ||
| .option("allowed-modules", { | ||
| type: "string", | ||
| array: true, | ||
| description: "Allowed modules", | ||
| alias: "a", | ||
| }) | ||
| .option("allowed-in-try-catch-modules", { | ||
| type: "string", | ||
| array: true, | ||
| description: "Allowed in try-catch modules", | ||
| alias: "t", | ||
| }) | ||
| .positional("files", { | ||
| type: "string", | ||
| description: "Files to check", | ||
| array: true, | ||
| }) | ||
| .strictCommands() | ||
| .demandCommand(1); | ||
| const args = await parser.parse(); | ||
|
|
||
| for (const rawFile of args._) { | ||
| const file = rawFile.toString(); | ||
| fs.readFile(file, "utf-8") | ||
| .then((content) => { | ||
| checkSuspiciousImports(file, content, { | ||
| allowedModules: args.allowedModules, | ||
| allowedInTryCatchModules: args.allowedInTryCatchModules, | ||
| list: true, | ||
| }); | ||
| }) | ||
| .catch((e) => { | ||
| console.error(e); | ||
| process.exit(1); | ||
| }); | ||
| } | ||
| } |
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