| id | debugging |
|---|---|
| title | Debugging |
Resolve uses the @resolve-js/debug-levels package to log debug information. This package extends the debug library's functionality with the following logging levels:
| Level | Description |
|---|---|
| log | Messages that should always be displayed |
| error | Errors that can prevent normal program execution |
| warn | Potential problems in the application's implementation |
| debug | Information displayed for debugging purposes |
| info | Messages that describe the current operation |
| verbose | Extended descriptions to the previous message |
Use the DEBUG_LEVEL environment variable to specify the logging level.
The reSolve framework uses the resolve prefix for all its debugging namespaces. To enable the framework's debug output, assign resolve* to the DEBUG environment variable as shown below:
DEBUG=resolve:* DEBUG_LEVEL=error yarn dev
The reSolve framework displays log, error, and warn level messages.
You can add the @resolve-js/debug-levels package to your application's dependencies to use @resolve-js/debug-levels to debug your reSolve application.
yarn add @resolve-js/debug-levels
To create a logger, pass your module's debugging namespace to the function the @resolve-js/debug-levels module exposes:
import debugLevels from '@resolve-js/debug-levels'
const log = debugLevels('myapp:api-handlers')
...The logger object exposes methods that correspond to the available debug levels:
...
log.debug('processing an API request')
log.verbose(`request body: ${JSON.stringify(req.body)}`)
log.verbose(`cookies: ${JSON.stringify(req.cookies)}`)
...Use the DEBUG and DEBUG_LEVEL environment variables to enable debug messages:
DEBUG=myapp:api-handlers DEBUG_LEVEL=verbose yarn dev