VS Code Macros extension macro that generates json schema from typescript

ts2jsonschema.js

// [VSCode Macros] extension
// https://marketplace.visualstudio.com/items?itemName=EXCEEDSYSTEM.vscode-macros
// License:MIT
const vscode = require('vscode');
const tsjsg = require('ts-json-schema-generator');
const tmpp = require('tmp-promise');

module.exports.macroCommands = {
    TS2JsonSchema: {
        no: 1,
        func: ts2JsonSchemaFunc,
    },
};

async function ts2JsonSchemaFunc() {
    const editor = vscode.window.activeTextEditor;
    if (!editor) {
        return 'Editor is not open.';
    }

    const document = editor.document;
    const selection = editor.selection;
    const text = document.getText(selection);
    if (text.length === 0) {
        return 'Nothing is selected.';
    }

    let tmpFile = null;
    try {
        tmpFile = await tmpp.file({ postfix: '.ts' });

        const textBuf = new TextEncoder().encode(text);
        await vscode.workspace.fs.writeFile(vscode.Uri.file(tmpFile.path), textBuf);

        const config = {
            path: tmpFile.path,
            //expose: "all",
            type: '*',
        };
        const jsonSchema = tsjsg.createGenerator(config).createSchema(config.type);
        const jsonText = JSON.stringify(jsonSchema, null, 2);

        const jsonDoc = await vscode.workspace.openTextDocument({
            language: 'json',
            content: jsonText
        });

        await vscode.window.showTextDocument(jsonDoc);
    }
    catch (e) {
        return e.message;
    }
    finally {
        tmpFile?.cleanup();
    }
}