When working in Eclipse, there is a useful shortcut (default CTRL + 2 + L) that can create a new local variable to store the result of a selected expression. For example...
this.doSomeCalculation();
If you position the cursor over the line above and use CTRL + 2 + L, it will transform into...
double someCalculation = this.doSomeCalculation()I frequently utilize this shortcut while coding in Java. Is there a similar feature available for editing TypeScript in Visual Studio Code?
If you're looking to streamline your coding process, consider assigning keybindings for refactorings, such as extracting constants.
One useful keybinding is setting ctrlshifte to perform the extract constant refactoring:
{
"key": "ctrl+shift+e",
"command": "editor.action.refactor",
"args": {
"kind": "refactor.extract.constant",
"apply": "first"
}
}
This keybinding will be effective in JavaScript and TypeScript, as well as other languages that support the extract constant refactoring feature.
Additionally, here's a handy variation for JS/TS that combines both extract type and extract constant functionalities into a single keybinding:
{
"key": "ctrl+shift+e",
"command": "editor.action.refactor",
"args": {
"kind": "refactor.extract",
"preferred": true,
"apply": "first"
}
}
There is a similar feature in vscode that can be found at the following link:
https://code.visualstudio.com/docs/java/java-editing
This feature demonstrates how to extract a portion of code into a local variable. It works slightly differently compared to eclipse. In vscode, you need to "select" the statement and then press ctrl + shift + R to bring up a window where you can choose to extract it to a local variable.
You also have the option to set a Keyboard Shortcut to Ctr + 2 L.
Although not identical, it provides a similar functionality...
After some experimentation and trial and error within the keybindings.json file, I was able to successfully configure this feature. For your setup, the key mapping should resemble the following:
[
{
"key": "ctrl+2 ctrl+l",
"command": "editor.action.codeAction",
"args": {
"kind": "refactor.assign.variable"
},
"when": "editorHasCodeActionsProvider && editorTextFocus && !editorReadonly"
}
]
In my own configuration, I utilize ctrl + alt + space:
[
{
"key": "ctrl+alt+space",
"command": "editor.action.codeAction",
"args": {
"kind": "refactor.assign.variable"
},
"when": "editorHasCodeActionsProvider && editorTextFocus && !editorReadonly"
}
]
To choose an expression and proceed with the following:
For Mac users:
Opt + Cmd + V
For Windows users:
Ctrl + Alt + V
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