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type LogLevel = \"debug\" | \"info\" | \"warn\" | \"error\";\n\nexport interface LogEvent {\n level: LogLevel;\n message: string;\n timestamp: string;\n [key: string]: unknown;\n}\n\nexport interface RequestLogContext {\n requestId: string;\n method: string;\n path: string;\n startTime: number;\n}\n\nexport interface LoggerConfig {\n /** Axiom dataset name. Defaults to AXIOM_DATASET env var */\n dataset?: string;\n /** Val Name to use in logs */\n valName?: string;\n /** Axiom API token. Defaults to AXIOM_TOKEN env var */\n token?: string;\n /** Minimum level to log to console. Default: 'error' */\n console?: LogLevel | \"none\";\n /** Default fields to include in every log */\n defaultFields?: Record;\n /** Called on Axiom ingest errors. Silent by default */\n onError?: (error: Error) => void;\n}\n\nexport interface Logger {\n debug(message: string, fields?: Record): void;\n info(message: string, fields?: Record): void;\n warn(message: string, fields?: Record): void;\n error(message: string, fields?: Record): void;\n flush(): Promise;\n}","label",[137],"6de9e786-eada-11f0-a48c-42dde27851f2","standalone.ts","bec2fede-ead7-11f0-82e4-42dde27851f2",33,["D",1767688431623],5,"import { AxiomLogger } from \"./logger.ts\";\nimport type { Logger, LoggerConfig } from \"./types.ts\";\n\nexport interface StandaloneLoggerConfig extends LoggerConfig {\n /** Identifier for this val (e.g., \"daily-cleanup\", \"welcome-email\") */\n valName?: string;\n /** Additional context to include in all logs */\n context?: Record;\n type?: \"HTTP\" | \"EMAIL\" | \"CRON\";\n}\n\n/**\n * Create a logger for Val Town cron jobs, email triggers, or scripts.\n * Remember to call flush() when done!\n *\n * Usage:\n * ```ts\n * import { createValLogger } from \"esm.town/v/kamalnrf/axiom-logger/standalone\";\n *\n * export default async function() {\n * const log = createValLogger({ valName: \"daily-cleanup\" });\n *\n * try {\n * log.info(\"starting cleanup\");\n * // ... do work\n * log.info(\"cleanup complete\", { deleted: 42 });\n * } catch (err) {\n * log.error(\"cleanup failed\", { error: err.message });\n * throw err;\n * } finally {\n * await log.flush();\n * }\n * }\n * ```\n */\nexport function createValLogger(config: StandaloneLoggerConfig = {}): Logger {\n const { valName, context, type, ...loggerConfig } = config;\n\n const logger = new AxiomLogger({\n ...loggerConfig,\n ...(valName ? { valName } : {}),\n defaultFields: {\n type: type ?? \"HTTP\",\n ...loggerConfig.defaultFields,\n ...context,\n },\n });\n\n // Set a pseudo-request context for val tracking\n logger.setRequestContext({\n requestId: crypto.randomUUID(),\n method: \"JOB\",\n path: valName ?? \"unknown\",\n startTime: Date.now(),\n });\n\n return logger;\n}\n\n/**\n * Wrap a cron/email handler with automatic logging and flush.\n * Logs job start, completion/error, and duration automatically.\n *\n * Usage for cron:\n * ```ts\n * import { withLogger } from \"esm.town/v/kamalnrf/axiom-logger/standalone\";\n *\n * export default withLogger({ valName: \"daily-report\" }, async (log) => {\n * log.info(\"generating report\");\n * const data = await fetchData();\n * log.info(\"report generated\", { rows: data.length });\n * });\n * ```\n *\n * Usage for email:\n * ```ts\n * import { withEmailLogger } from \"esm.town/v/kamalnrf/axiom-logger/standalone\";\n *\n * export default withEmailLogger({ valName: \"process-email\" }, async (log, email) => {\n * log.info(\"processing email\", { from: email.from, subject: email.subject });\n * // ... process email\n * });\n * ```\n */\nexport function withLogger(\n config: StandaloneLoggerConfig,\n handler: (log: Logger) => Promise,\n): () => Promise {\n return async () => {\n const log = createValLogger(config);\n const startTime = Date.now();\n\n log.info(\"job started\");\n\n try {\n const result = await handler(log);\n const duration = Date.now() - startTime;\n log.info(\"job completed\", { duration, success: true });\n return result;\n } catch (err) {\n const duration = Date.now() - startTime;\n log.error(\"job failed\", {\n duration,\n success: false,\n error: err instanceof Error ? err.message : String(err),\n stack: err instanceof Error ? err.stack : undefined,\n });\n throw err;\n } finally {\n await log.flush();\n }\n };\n}\n\nexport { Logger };",[149],"c5c0c742-eac9-11f0-9697-42dde27851f2","logger.ts","34a884b0-eab1-11f0-8383-42dde27851f2",25,["D",1767681277546],2,"import { Axiom } from \"npm:@axiomhq/js@1.3.0\";\nimport type {\n LogEvent,\n Logger,\n LoggerConfig,\n LogLevel,\n RequestLogContext,\n} from \"./types.ts\";\n\nconst LOG_LEVELS: Record = {\n debug: 0,\n info: 1,\n warn: 2,\n error: 3,\n};\n\nexport class AxiomLogger implements Logger {\n private valName: string;\n private axiom: Axiom;\n private dataset: string;\n private buffer: LogEvent[] = [];\n private consoleLevel: LogLevel | \"none\";\n private defaultFields: Record;\n private onError?: (error: Error) => void;\n private requestContext?: RequestLogContext;\n\n constructor(config: LoggerConfig = {}) {\n const token = config.token ?? Deno.env.get(\"AXIOM_TOKEN\");\n const dataset = config.dataset ?? Deno.env.get(\"AXIOM_DATASET\");\n\n if (!token) {\n throw new Error(\n \"Axiom token required: set AXIOM_TOKEN env var or pass token in config\",\n );\n }\n if (!dataset) {\n throw new Error(\n \"Axiom dataset required: set AXIOM_DATASET env var or pass dataset in config\",\n );\n }\n\n this.axiom = new Axiom({ token });\n this.dataset = dataset;\n this.consoleLevel = config.console ?? \"error\";\n this.defaultFields = config.defaultFields ?? {};\n this.onError = config.onError;\n this.valName = config.valName ?? \"val\";\n }\n\n /** Attach request context (used by middleware) */\n setRequestContext(ctx: RequestLogContext): void {\n this.requestContext = ctx;\n }\n\n /** Get request context for finalizing logs */\n getRequestContext(): RequestLogContext | undefined {\n return this.requestContext;\n }\n\n private log(\n level: LogLevel,\n message: string,\n fields: Record = {},\n ): void {\n const event: LogEvent = {\n level,\n message,\n ...(this.valName ? { valName: this.valName } : {}),\n timestamp: new Date().toISOString(),\n ...this.defaultFields,\n ...this.requestContext\n ? {\n requestId: this.requestContext.requestId,\n method: this.requestContext.method,\n path: this.requestContext.path,\n }\n : {},\n ...fields,\n };\n\n this.buffer.push(event);\n this.logToConsole(level, event);\n }\n\n private logToConsole(level: LogLevel, event: LogEvent): void {\n if (this.consoleLevel === \"none\") return;\n if (LOG_LEVELS[level] < LOG_LEVELS[this.consoleLevel]) return;\n\n const { message, ...rest } = event;\n const fn = level === \"error\"\n ? console.error\n : level === \"warn\"\n ? console.warn\n : console.log;\n fn(\n `[${level.toUpperCase()}] ${message}`,\n Object.keys(rest).length > 0 ? rest : \"\",\n );\n }\n\n debug(message: string, fields?: Record): void {\n this.log(\"debug\", message, fields);\n }\n\n info(message: string, fields?: Record): void {\n this.log(\"info\", message, fields);\n }\n\n warn(message: string, fields?: Record): void {\n this.log(\"warn\", message, fields);\n }\n\n error(message: string, fields?: Record): void {\n this.log(\"error\", message, fields);\n }\n\n async flush(): Promise {\n if (this.buffer.length === 0) return;\n\n const events = [...this.buffer];\n this.buffer = [];\n\n try {\n this.axiom.ingest(this.dataset, events);\n await this.axiom.flush();\n } catch (err) {\n if (this.onError) {\n this.onError(err instanceof Error ? err : new Error(String(err)));\n }\n // Silent fail by default - don't break the app\n }\n }\n}\n\n/** Create a standalone logger instance (for scripts, crons, non-HTTP contexts) */\nexport function createLogger(config: LoggerConfig = {}): Logger {\n return new AxiomLogger(config);\n}",[157],"bec31086-ead7-11f0-82e4-42dde27851f2","index.ts","4a1eebea-eab1-11f0-aaf7-42dde27851f2",28,["D",1767687278772],"// Core logger\nexport { AxiomLogger, createLogger } from \"./logger.ts\";\n\n// Types\nexport type {\n LogEvent,\n Logger,\n LoggerConfig,\n LogLevel,\n RequestLogContext,\n} from \"./types.ts\";\n\n// Framework/ Trigger Helpers available via direct imports:\n// - Hono: import { axiomMiddleware, getLogger, type AxiomEnv } from \"esm.town/v/kamalnrf/axiom-logger/hono\"\n// - H3: import { axiomMiddleware, getLogger } from \"esm.town/v/kamalnrf/axiom-logger/h3\"\n// - Cron/Email: import { withLogger, createValLogger } from \"esm.town/v/kamalnrf/axiom-logger/standalone\"",[165],"3ceeac44-eab1-11f0-b03f-42dde27851f2","hono.ts","3ceead3e-eab1-11f0-b03f-42dde27851f2",3,["D",1767670740081],"import type { Context, MiddlewareHandler, Env } from \"npm:hono@4\";\nimport { AxiomLogger } from \"./logger.ts\";\nimport type { LoggerConfig, Logger } from \"./types.ts\";\n\nconst LOG_KEY = \"log\";\n\n/** Hono environment type with logger variable */\nexport type AxiomEnv = {\n Variables: {\n log: Logger;\n };\n};\n\nexport interface AxiomMiddlewareConfig extends LoggerConfig {\n /** Generate custom request ID. Defaults to crypto.randomUUID() */\n generateRequestId?: () => string;\n}\n\nfunction generateRequestId(): string {\n return crypto.randomUUID();\n}\n\n/**\n * Hono middleware that provides request-scoped Axiom logging.\n * \n * Usage:\n * ```ts\n * import { Hono } from \"npm:hono\";\n * import { axiomMiddleware, type AxiomEnv } from \"esm.town/v/kamalnrf/axiom-logger/hono\";\n * \n * const app = new Hono();\n * app.use(axiomMiddleware());\n * \n * app.get(\"/\", (c) => {\n * c.var.log.info(\"handling request\", { custom: \"field\" });\n * return c.json({ ok: true });\n * });\n * ```\n */\nexport function axiomMiddleware(config: AxiomMiddlewareConfig = {}): MiddlewareHandler {\n const genRequestId = config.generateRequestId ?? generateRequestId;\n\n return async (c, next) => {\n const logger = new AxiomLogger(config);\n const requestId = genRequestId();\n const startTime = Date.now();\n\n logger.setRequestContext({\n requestId,\n method: c.req.method,\n path: new URL(c.req.url).pathname,\n startTime,\n });\n\n c.set(LOG_KEY, logger);\n\n // Log request start\n logger.info(\"request started\", {\n url: c.req.url,\n headers: Object.fromEntries(c.req.raw.headers),\n });\n\n let status = 200;\n let errorMessage: string | undefined;\n\n try {\n await next();\n status = c.res.status;\n } catch (err) {\n status = 500;\n errorMessage = err instanceof Error ? err.message : String(err);\n logger.error(\"request error\", { error: errorMessage });\n throw err;\n } finally {\n const duration = Date.now() - startTime;\n \n logger.info(\"request completed\", {\n status,\n duration,\n ...(errorMessage ? { error: errorMessage } : {}),\n });\n\n // Fire-and-forget flush - don't block response\n logger.flush().catch(() => {});\n }\n };\n}\n\n/**\n * Get logger from Hono context (typed escape hatch).\n * Prefer `c.var.log` with `Hono` for best ergonomics.\n */\nexport function getLogger(c: Context): Logger {\n const logger = c.get(LOG_KEY);\n if (!logger) {\n throw new Error(\"Logger not found. Did you forget to add axiomMiddleware()?\");\n }\n return logger as Logger;\n}\n",[172],"04282b62-eac8-11f0-a1fe-42dde27851f2","h3.ts","eedc23e4-eac7-11f0-8da2-42dde27851f2",22,["D",1767680523248],"import { onRequest, onResponse, onError, type H3Event } from \"npm:h3@2.0.1-rc.7\";\nimport { AxiomLogger } from \"./logger.ts\";\nimport type { LoggerConfig, Logger } from \"./types.ts\";\n\nconst LOG_KEY = \"log\";\nconst START_TIME_KEY = \"_axiomStartTime\";\n\nexport interface AxiomMiddlewareConfig extends LoggerConfig {\n /** Generate custom request ID. Defaults to crypto.randomUUID() */\n generateRequestId?: () => string;\n}\n\nfunction generateRequestId(): string {\n return crypto.randomUUID();\n}\n\n/**\n * H3 v2 middleware that provides request-scoped Axiom logging.\n * Returns an array of middleware to register with app.use().\n * \n * Usage:\n * ```ts\n * import { H3 } from \"npm:h3\";\n * import { axiomMiddleware } from \"esm.town/v/kamalnrf/axiom-logger/h3\";\n * \n * const app = new H3();\n * axiomMiddleware().forEach(m => app.use(m));\n * \n * app.get(\"/\", (event) => {\n * event.context.log.info(\"handling request\", { custom: \"field\" });\n * return { ok: true };\n * });\n * ```\n */\nexport function axiomMiddleware(config: AxiomMiddlewareConfig = {}) {\n const genRequestId = config.generateRequestId ?? generateRequestId;\n\n const requestMiddleware = onRequest((event) => {\n const logger = new AxiomLogger(config);\n const requestId = genRequestId();\n const startTime = Date.now();\n\n logger.setRequestContext({\n requestId,\n method: event.req.method,\n path: event.url.pathname,\n startTime,\n });\n\n event.context[LOG_KEY] = logger;\n event.context[START_TIME_KEY] = startTime;\n\n logger.info(\"request started\", {\n url: event.url.href,\n });\n });\n\n const responseMiddleware = onResponse(async (_response, event) => {\n const logger = event.context[LOG_KEY] as AxiomLogger | undefined;\n const startTime = event.context[START_TIME_KEY] as number | undefined;\n \n if (!logger) return;\n\n const duration = startTime ? Date.now() - startTime : 0;\n \n logger.info(\"request completed\", {\n duration,\n });\n\n await logger.flush().catch(() => {});\n });\n\n const errorMiddleware = onError(async (error, event) => {\n const logger = event.context[LOG_KEY] as AxiomLogger | undefined;\n const startTime = event.context[START_TIME_KEY] as number | undefined;\n \n if (!logger) return;\n\n const duration = startTime ? Date.now() - startTime : 0;\n \n logger.error(\"request error\", {\n duration,\n error: error.message,\n stack: error.stack,\n });\n\n await logger.flush().catch(() => {});\n });\n\n return [requestMiddleware, responseMiddleware, errorMiddleware];\n}\n\n/**\n * Get logger from H3 event context.\n * Access via `event.context.log` or use this helper.\n */\nexport function getLogger(event: H3Event): Logger {\n const logger = event.context[LOG_KEY];\n if (!logger) {\n throw new Error(\"Logger not found. Did you forget to add axiomMiddleware()?\");\n }\n return logger as Logger;\n}\n\n// Type augmentation for H3 event context\ndeclare module \"npm:h3@2.0.1-rc.7\" {\n interface H3EventContext {\n log: Logger;\n }\n}\n",[179],"512192ee-eab1-11f0-b7d6-42dde27851f2","example-hono.ts","512193de-eab1-11f0-b7d6-42dde27851f2",6,["D",1767670773970],"http","/**\n * Example: Hono app with Axiom logging\n * \n * Set these environment variables:\n * - AXIOM_TOKEN: Your Axiom API token\n * - AXIOM_DATASET: Your Axiom dataset name\n */\nimport { Hono } from \"npm:hono@4\";\nimport { axiomMiddleware, type AxiomEnv } from \"./hono.ts\";\n\nconst app = new Hono();\n\n// Add Axiom logging middleware\napp.use(axiomMiddleware({\n // Optional: override defaults\n // dataset: \"my-dataset\",\n // token: \"my-token\",\n console: \"warn\", // Only log warnings and errors to Val Town console\n}));\n\napp.get(\"/\", (c) => {\n c.var.log.info(\"home page accessed\");\n return c.json({ message: \"Hello from axiom-logger!\" });\n});\n\napp.get(\"/users/:id\", async (c) => {\n const userId = c.req.param(\"id\");\n c.var.log.info(\"fetching user\", { userId });\n \n // Simulate some work\n await new Promise((r) => setTimeout(r, 100));\n \n c.var.log.info(\"user fetched successfully\", { userId, cached: false });\n return c.json({ id: userId, name: \"Example User\" });\n});\n\napp.post(\"/webhook\", async (c) => {\n const body = await c.req.json();\n c.var.log.info(\"webhook received\", { \n type: body.type,\n payloadSize: JSON.stringify(body).length \n });\n \n return c.json({ received: true });\n});\n\napp.onError((err, c) => {\n c.var.log.error(\"unhandled error\", { \n error: err.message,\n stack: err.stack \n });\n return c.json({ error: \"Internal Server Error\" }, 500);\n});\n\nexport default app.fetch;\n",[186],"e20ed04c-eac9-11f0-95f3-42dde27851f2","example-h3.ts","f81b95c0-eac7-11f0-a6b4-42dde27851f2",26,["D",1767681325036],"/**\n * Example: H3 v2 app with Axiom logging\n *\n * Set these environment variables:\n * - AXIOM_TOKEN: Your Axiom API token\n * - AXIOM_DATASET: Your Axiom dataset name\n */\nimport { H3 } from \"npm:h3@2.0.1-rc.7\";\nimport { axiomMiddleware } from \"./h3.ts\";\n\nconst app = new H3();\n\n// Add Axiom logging middleware\naxiomMiddleware({\n valName: \"example-logger\",\n console: \"warn\",\n}).forEach((m) => app.use(m));\n\napp.get(\"/\", (event) => {\n event.context.log.info(\"home page accessed\");\n return { message: \"Hello from axiom-logger with H3 v2!\" };\n});\n\napp.get(\"/users/:id\", async (event) => {\n const userId = event.context.params?.id;\n event.context.log.info(\"fetching user\", { userId });\n\n // Simulate some work\n await new Promise((r) => setTimeout(r, 100));\n\n event.context.log.info(\"user fetched successfully\", { userId });\n return { id: userId, name: \"Example User\" };\n});\n\napp.post(\"/webhook\", async (event) => {\n const body = await event.req.json();\n event.context.log.info(\"webhook received\", {\n type: body?.type,\n payloadSize: JSON.stringify(body).length,\n });\n\n return { received: true };\n});\n\nexport default app.fetch;",[194],"bec2eade-ead7-11f0-82e4-42dde27851f2","example-cron.ts","bec2eb7e-ead7-11f0-82e4-42dde27851f2",["D",1767687278772],"interval","/**\n * Example: Cron job with Axiom logging\n *\n * Set these environment variables:\n * - AXIOM_TOKEN: Your Axiom API token\n * - AXIOM_DATASET: Your Axiom dataset name\n */\nimport { withLogger } from \"./standalone.ts\";\n\nexport default withLogger(\n {\n valName: \"example-cron\",\n console: \"warn\",\n type: \"CRON\",\n },\n async (log) => {\n log.info(\"starting scheduled task\");\n\n // Simulate some work\n const items = [1, 2, 3, 4, 5];\n for (const item of items) {\n log.debug(\"processing item\", { item });\n await new Promise((r) => setTimeout(r, 100));\n }\n\n log.info(\"task complete\", {\n processedCount: items.length,\n timestamp: new Date().toISOString(),\n });\n },\n);",[201],"f41aa3a8-eaf4-11f0-b42f-42dde27851f2","README.md","7702e576-eab1-11f0-81eb-42dde27851f2",35,["D",1767699823671],4,"# axiom-logger\n\nStructured logging to [Axiom](https://axiom.co) for Val Town. Batches logs and\nflushes at request end.\n\n## Setup\n\nSet environment variables in your val:\n\n- `AXIOM_TOKEN` - API token with ingest permission\n- `AXIOM_DATASET` - Dataset name\n\n## Hono\n\n```typescript\nimport { Hono } from \"npm:hono@4\";\nimport {\n type AxiomEnv,\n axiomMiddleware,\n} from \"https://esm.town/v/kamalnrf/axiom-logger/hono.ts\";\n\nconst app = new Hono();\napp.use(axiomMiddleware());\n\napp.get(\"/\", (c) => {\n c.var.log.info(\"hello\", { userId: 123 });\n return c.json({ ok: true });\n});\n\nexport default app.fetch;\n```\n\n## H3 (v2)\n\n```typescript\nimport { H3 } from \"npm:h3@^2\";\nimport { axiomMiddleware } from \"https://esm.town/v/kamalnrf/axiom-logger/h3.ts\";\n\nconst app = new H3();\naxiomMiddleware().forEach((m) => app.use(m));\n\napp.get(\"/\", (event) => {\n event.context.log.info(\"hello\", { userId: 123 });\n return { ok: true };\n});\n\nexport default app.fetch;\n```\n\n## Cron / Scripts\n\n```typescript\nimport { withLogger } from \"https://esm.town/v/kamalnrf/axiom-logger/standalone.ts\";\n\nexport default withLogger({ valName: \"daily-cleanup\" }, async (log) => {\n log.info(\"starting\");\n // ... do work\n log.info(\"done\", { processed: 42 });\n});\n```\n\n## Options\n\n```typescript\naxiomMiddleware({\n dataset: \"my-dataset\", // override env var\n token: \"...\", // override env var\n console: \"warn\", // console output level: \"debug\" | \"info\" | \"warn\" | \"error\" | \"none\"\n defaultFields: { env: \"prod\" },\n onError: (err) => console.error(err),\n});\n```\n\n## Log methods\n\n```typescript\nlog.debug(message, fields?)\nlog.info(message, fields?)\nlog.warn(message, fields?)\nlog.error(message, 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