VS Code snippets Variable transforms

vscode_variables_transforms.txt

The filename of the current document without its extensions
${TM_FILENAME_BASE}
Button.ts -> Button

The line before the first dot in the filename of the current document
Button.test.ts -> Button
${TM_FILENAME/([a-z0-9]+)\\..+$/$1/gi}

Name of the first subdirectory, after 'src' (detecting FSD layer)
${RELATIVE_FILEPATH/src\\/([a-z]+)\\/.*/$1/gi}
src/entities/Product/ui/Product/Product.ts -> entities

Name of the second subdirectory, after 'src (detecting FSD slice)
${RELATIVE_FILEPATH/src\\/[a-z]+\\/([a-z0-9]+)\\/.*/$1/gi}