Type n to go to the next occurrence and N to the previous one Find specific text with / like /vim and press Enter. Type CTRL + r to redo the previous undo.type dw to remove the word (and the space after it).type d + number of lines + d to delete specified lines.enter the visual mode, scroll through the text you want to delete, and type d.type y + number of lines + y to copy specified lines and paste it with p.enter the visual mode, scroll through the text you want to copy, type y, then scroll to the place you want to paste it and type p.:%s///g - find and replace the occurrences within the whole file (e.g., :%s/Vim/Emacs/g).:wq - save the changes and exit the file.:edit script.js - create a new file or open the existing one.$ - jump to the end of the current line.^ - jump to the start of the current line.line number + Shift + g, (e.g., 5 + Shift + g) - jump to the specific line number, 5th in this case.g + g - scroll to the beginning of the file.Shift + g - scroll to the end of the file.Command-line - type : and some command plus Enter to run the command.Insert - type i, and you can start editing the file content.Visual - type v, and you can select text content for deleting and copying with scrolling shortcuts.It enables scrolling through the file content Put correlation ID as a message parameter for tracing related logs. Stream logs to the standard output in JSON format so logging aggregators (Graylog, e.g.) can collect and adequately parse themĪvoid logging any credentials, like passwords, auth tokens, etc. Put log level as an environment variable. fatal - app crash, needs to be fixed as soon as possibleĭon't use the debug logs on production.warning - something unexpected happened (e.g., third-party API fails).debug - additional logs needed for troubleshooting.error - app processing failure, something that needs to be fixed.info - app behavior, don't log every single step.Use the appropriate log level for the message. A unique id will produce a lot of different messages with the same context. This post covers some logging practices for the back-end (Node.js) apps.Īvoid putting unique identifiers (e.g., user id) within the message. Launch configs Nodeīelow are examples of configurations for running Node processes with the debugger. The selected configuration on the Run and Debug tab is used as the default one. There are multiple configurations: node - runs the program from program field, and logs are shown in debug console, and node-terminal - runs the command from command field and shows the logs in the terminal. Runtime executables and programs can have arguments defined in runtimeArgs and args fields, respectively.Ī configuration can have different requests: attach - the debugger is attached to the running process, and launch - the debugger launches a new process and wraps it. A configuration can use the program field to point to the binary executable package inside node_modules directory to avoid installing packages globally. The beforementioned executables should be installed globally before running the configurations. VSCode configurations can use runtime executables like npm and ts-node. This post covers configuring and running a debugger for different kinds of Node.js apps in VSCode. VSCode provides a built-in debugger for JavaScript-based apps. Rather than doing it with console logs, debugging with a debugger and breakpoints is recommended. Debugging Node.js apps with Visual Studio Code debuggerPublished December 28, 2022・ Last updated October 22, 2023・ 4 min read
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