Middy: Typescript integration fails

[mamhaidly]

Script handler.ts

import middy = require('middy'); import middlewares = require('middy/middlewares'); const validator = middlewares.validator; const handler = middy((event, context, cb) => { cb(null, {}); }); const schema = { required: ['body'], properties: { body: { type: 'string' } } }; handler.use( validator({ inputSchema: schema }) ); const event = { body: JSON.stringify({ something: 'somethingelse' }) }; handler(event, null, (err, res) => { console.log('error', err); });

Issue when running tsc handler.ts:
node_modules/middy/middlewares.d.ts:4:8 - error TS1259: Module '"C:/XXXXXX/node_modules/middy/index"' can only be default-imported using the 'esModuleInterop' flag

4 import middy from './';
~

node_modules/middy/index.d.ts:55:1
55 export = middy;
~~~
This module is declared with using 'export =', and can only be used with a default import when using the 'esModuleInterop' flag.

Found 1 error.

Explanation:
middy is exported using export = in index.d.ts
it is being imported using import middy from './'

Reading from Typescript's documentation:
When exporting a module using export =, TypeScript-specific import module = require("module") must be used to import the module.

tsconfigs.js
{ "compilerOptions": { "lib": ["es2017"], "removeComments": true, "moduleResolution": "node", "noUnusedLocals": true, "noUnusedParameters": true, "sourceMap": true, "target": "es2017", "outDir": "lib", "esModuleInterop": true, "module": "commonjs" }, "include": ["./**/*.ts"], "exclude": [ "node_modules/**/*", ".serverless/**/*", ".webpack/**/*", "_warmup/**/*", ".vscode/**/*" ] }

Possible solution:
Error is resolved when "import middy from './'" in middlewares.d.ts is changed to "import middy = require('./index');"

[hanna-becker]

Why is this closed? What is the solution?