vscode-languageserver-textdocument

import { TextDocument } from 'vscode-languageserver-textdocument'; import { Position, Range, TextEdit } from 'vscode-languageserver-types'; // 1. Create an initial document const uri = 'file:///path/to/example.ts'; const languageId = 'typescript'; const version = 1; const initialText = 'console.log("Hello");\nconst x = 10;'; let document = TextDocument.create(uri, languageId, version, initialText); console.log(`Initial Document (v${document.version}):\n${document.getText()}`); console.log(`Line Count: ${document.lineCount}`); // 2. Simulate an edit: Change 'Hello' to 'World' const changeRange: Range = { start: Position.create(0, 13), end: Position.create(0, 18) }; const newText = 'World'; const edits: TextEdit[] = [ TextEdit.replace(changeRange, newText) ]; // 3. Apply the edits to get a new document instance const newVersion = document.version + 1; const updatedDocument = TextDocument.applyEdits(document, edits); // Important: The original document is unchanged console.log(`\nOriginal Document (still v${document.version}):\n${document.getText()}`); // The updated document reflects the changes console.log(`\nUpdated Document (v${updatedDocument.version}):\n${updatedDocument.getText()}`); // Example of getting position from offset and vice-versa const offset = updatedDocument.offsetAt(Position.create(1, 6)); // 'x' in 'const x = 10;' const position = updatedDocument.positionAt(offset); console.log(`\nOffset of 'x': ${offset}, Position: { line: ${position.line}, character: ${position.character} }`);