Snippet Insertion Features

Create dynamic snippets with tabstops, placeholders, and other snippet insertion features

How they work

Microsoft can explain it better

Add them to your snippets

There are a few ways to add them. Your curser must be in the snippet editor.

• Right Click while in the snippet editor and choose which feature to add
• Use keyboard shortcuts while in the snippet editor
• Click the three-dot menu at the right of your editor
• Choose one of the commmands below because you love the command prompt
• Type the name of the insertion feature and use the extension-provided snippet

Keyboard Shortcuts

Insertion Feature	Linux	Mac	Windows
Tabstop	ctrl+shift+1	cmd+opt+1	alt+shift+1
Placeholder	ctrl+shift+2	cmd+opt+2	alt+shift+2
Choice	ctrl+shift+3	cmd+opt+3	alt+shift+3
Variable	ctrl+shift+4	cmd+opt+4	alt+shift+4
Variable with Placeholder	ctrl+shift+5	cmd+opt+5	alt+shift+5
Placeholder with Transformation	ctrl+shift+6	cmd+opt+6	alt+shift+6
Variable with Transformation	ctrl+shift+7	cmd+opt+7	alt+shift+7

Commands

• Tabstops: snippetstudio.editor.insertTabStop
• Placeholders: snippetstudio.editor.insertPlaceholder
• Choices: snippetstudio.editor.insertChoice
• Variables: snippetstudio.editor.insertVariable
• Variables with Placeholders: snippetstudio.editor.insertVariablePlaceholder
• Placeholders with Transformations: snippetstudio.editor.insertPlaceholderWithTranformation
• Variables with Transformations: snippetstudio.editor.insertVariableWithTransformation

Examples

Placeholders

• Use multiple tabstop/placeholder numbers to automatically enter mutliline editing
• Use placeholders for default values
• $0 is where the cursor ends after tabbing through all insertion features

Regex + Multiline

Goal: Fast creation of a useState variable hook.

1. Type 'state' as the prefix and hit tab to expand
2. Type the name of the variable. ie 'myState'
3. Hit tab to move to $2 tabstop. Regex autocapitalizes the 'M' in 'setMyState'
4. Type a default value
5. Hit tab to move the cursor to the end of the line

const [myState, setMyState] = useState('foo');

Solution: Use camelcase and pascalcase in Placeholder Transforms

const [${1/(.*)/${1:/camelcase}/}, set${1/(.*)/${1:/pascalcase}/}] = useState($2)$0

If you use regex you are cool. Good luck rendering that one, Docusaurus!

Variable Regex

There's also variable transformation with regex. You can read VS Code's and TextMate's documentation if you want to better understand it.

"bullit points": {
    "prefix": "bullit",
    "body": [
        "${TM_SELECTED_TEXT/^.+$/- $0/gm}"
    ],
    "description": "add markdown bullets"
}