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package.lib.errors.rewrite-stack-trace.js.map Maven / Gradle / Ivy
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The function passed to\n * beginHiddenCallStack is the first hidden function, while the function passed\n * to endHiddenCallStack is the first shown function.\n *\n * When an error is thrown _outside_ of the hidden zone, everything between\n * beginHiddenCallStack and endHiddenCallStack will not be shown.\n * If an error is thrown _inside_ the hidden zone, then the whole stack trace\n * will be visible: this is to avoid hiding real bugs.\n * However, if an error inside the hidden zone is expected, it can be marked\n * with the expectedError(error) function to keep the hidden frames hidden.\n *\n * Consider this call stack (the outer function is the bottom one):\n *\n * 1. a()\n * 2. endHiddenCallStack(b)()\n * 3. c()\n * 4. beginHiddenCallStack(d)()\n * 5. e()\n * 6. f()\n *\n * - If a() throws an error, then its shown call stack will be \"a, b, e, f\"\n * - If b() throws an error, then its shown call stack will be \"b, e, f\"\n * - If c() throws an expected error, then its shown call stack will be \"e, f\"\n * - If c() throws an unexpected error, then its shown call stack will be \"c, d, e, f\"\n * - If d() throws an expected error, then its shown call stack will be \"e, f\"\n * - If d() throws an unexpected error, then its shown call stack will be \"d, e, f\"\n * - If e() throws an error, then its shown call stack will be \"e, f\"\n *\n * Additionally, an error can inject additional \"virtual\" stack frames using the\n * injectVirtualStackFrame(error, filename) function: those are injected as a\n * replacement of the hidden frames.\n * In the example above, if we called injectVirtualStackFrame(err, \"h\") and\n * injectVirtualStackFrame(err, \"i\") on the expected error thrown by c(), its\n * shown call stack would have been \"h, i, e, f\".\n * This can be useful, for example, to report config validation errors as if they\n * were directly thrown in the config file.\n */\n\nconst ErrorToString = Function.call.bind(Error.prototype.toString);\n\nconst SUPPORTED =\n !!Error.captureStackTrace &&\n Object.getOwnPropertyDescriptor(Error, \"stackTraceLimit\")?.writable === true;\n\nconst START_HIDING = \"startHiding - secret - don't use this - v1\";\nconst STOP_HIDING = \"stopHiding - secret - don't use this - v1\";\n\ntype CallSite = NodeJS.CallSite;\n\nconst expectedErrors = new WeakSet();\nconst virtualFrames = new WeakMap();\n\nfunction CallSite(filename: string): CallSite {\n // We need to use a prototype otherwise it breaks source-map-support's internals\n return Object.create({\n isNative: () => false,\n isConstructor: () => false,\n isToplevel: () => true,\n getFileName: () => filename,\n getLineNumber: () => undefined,\n getColumnNumber: () => undefined,\n getFunctionName: () => undefined,\n getMethodName: () => undefined,\n getTypeName: () => undefined,\n toString: () => filename,\n } as CallSite);\n}\n\nexport function injectVirtualStackFrame(error: Error, filename: string) {\n if (!SUPPORTED) return;\n\n let frames = virtualFrames.get(error);\n if (!frames) virtualFrames.set(error, (frames = []));\n frames.push(CallSite(filename));\n\n return error;\n}\n\nexport function expectedError(error: Error) {\n if (!SUPPORTED) return;\n expectedErrors.add(error);\n return error;\n}\n\nexport function beginHiddenCallStack(\n fn: (...args: A) => R,\n) {\n if (!SUPPORTED) return fn;\n\n return Object.defineProperty(\n function (...args: A) {\n setupPrepareStackTrace();\n return fn(...args);\n },\n \"name\",\n { value: STOP_HIDING },\n );\n}\n\nexport function endHiddenCallStack (\n fn: (...args: A) => R,\n) {\n if (!SUPPORTED) return fn;\n\n return Object.defineProperty(\n function (...args: A) {\n return fn(...args);\n },\n \"name\",\n { value: START_HIDING },\n );\n}\n\nfunction setupPrepareStackTrace() {\n // @ts-expect-error This function is a singleton\n setupPrepareStackTrace = () => {};\n\n const { prepareStackTrace = defaultPrepareStackTrace } = Error;\n\n // We add some extra frames to Error.stackTraceLimit, so that we can\n // always show some useful frames even after deleting ours.\n // STACK_TRACE_LIMIT_DELTA should be around the maximum expected number\n // of internal frames, and not too big because capturing the stack trace\n // is slow (this is why Error.stackTraceLimit does not default to Infinity!).\n // Increase it if needed.\n // However, we only do it if the user did not explicitly set it to 0.\n const MIN_STACK_TRACE_LIMIT = 50;\n Error.stackTraceLimit &&= Math.max(\n Error.stackTraceLimit,\n MIN_STACK_TRACE_LIMIT,\n );\n\n Error.prepareStackTrace = function stackTraceRewriter(err, trace) {\n let newTrace = [];\n\n const isExpected = expectedErrors.has(err);\n let status: \"showing\" | \"hiding\" | \"unknown\" = isExpected\n ? 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