fatsify核心功能示例测试!!!

node_modules/fastify/docs/Reference/Warnings.md

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+<h1 align="center">Fastify</h1>
+
+**Table of contents**
+- [Warnings](#warnings)
+  - [Warnings In Fastify](#warnings-in-fastify)
+  - [Fastify Warning Codes](#fastify-warning-codes)
+    - [FSTWRN001](#FSTWRN001)
+    - [FSTWRN002](#FSTWRN002)
+  - [Fastify Deprecation Codes](#fastify-deprecation-codes)
+    - [FSTDEP022](#FSTDEP022)
+
+## Warnings
+
+### Warnings In Fastify
+
+Fastify uses Node.js's [warning event](https://nodejs.org/api/process.html#event-warning)
+API to notify users of deprecated features and coding mistakes. Fastify's
+warnings are recognizable by the `FSTWRN` and `FSTDEP` prefixes. When
+encountering such a warning, it is highly recommended to determine the cause
+using the [`--trace-warnings`](https://nodejs.org/api/cli.html#--trace-warnings)
+and [`--trace-deprecation`](https://nodejs.org/api/cli.html#--trace-deprecation)
+flags. These produce stack traces pointing to where the issue occurs in the
+application's code. Issues opened about warnings without this information will
+be closed due to lack of details.
+
+Warnings can also be disabled, though it is not recommended. If necessary, use
+one of the following methods:
+
+- Set the `NODE_NO_WARNINGS` environment variable to `1`
+- Pass the `--no-warnings` flag to the node process
+- Set `no-warnings` in the `NODE_OPTIONS` environment variable
+
+For more information on disabling warnings, see [Node's documentation](https://nodejs.org/api/cli.html).
+
+Disabling warnings may cause issues when upgrading Fastify versions. Only
+experienced users should consider disabling warnings.
+
+### Fastify Warning Codes
+
+| Code | Description | How to solve | Discussion |
+| ---- | ----------- | ------------ | ---------- |
+| <a id="FSTWRN001">FSTWRN001</a> | The specified schema for a route is missing. This may indicate the schema is not well specified. | Check the schema for the route. | [#4647](https://github.com/fastify/fastify/pull/4647) |
+| <a id="FSTWRN002">FSTWRN002</a> | The %s plugin being registered mixes async and callback styles, which will result in an error in `fastify@5`. | Do not mix async and callback style. | [#5139](https://github.com/fastify/fastify/pull/5139) |
+
+
+### Fastify Deprecation Codes
+
+Deprecation codes are supported by the Node.js CLI options:
+
+- [--no-deprecation](https://nodejs.org/api/cli.html#--no-deprecation)
+- [--throw-deprecation](https://nodejs.org/api/cli.html#--throw-deprecation)
+- [--trace-deprecation](https://nodejs.org/api/cli.html#--trace-deprecation)
+
+
+| Code | Description | How to solve | Discussion |
+| ---- | ----------- | ------------ | ---------- |
+| <a id="FSTDEP022">FSTDEP022</a> | You are trying to access the deprecated router options on top option properties. | Use `options.routerOptions`. | [#5985](https://github.com/fastify/fastify/pull/5985)