How can I incorporate --esModuleInterop into tsconfig instead of using it as a standalone flag?

Did you know that Typescript v 2.7 has released a cool new flag called --esModuleInterop? Check it out at https://www.typescriptlang.org/docs/handbook/compiler-options.html. I'm currently exploring if there's a way to utilize this with tsconfig.json, although it doesn't seem to be well-documented yet: http://www.typescriptlang.org/docs/handbook/tsconfig-json.html

Could it possibly work with the module? setting?

My main goal is to be able to import modules like this:

import React from "react"

instead of having to write:

import * as React from "react"

And ideally, configure this in my tsconfig file.

typescript

Answer №1

Indeed, it is recommended to include "esModuleInterop": true in your tsconfig.json file. Most flags that can be used in the CLI can also be set in the configuration file. By running tsc --init in the command line, a comprehensive tsconfig file with explanations of all available options will be generated.

UPDATE: I've discovered that the behavior of esModuleInterop depends on the value assigned to module.

If your "module": "commonjs", simply enabling "esModuleInterop": true should suffice.

If your "module": "es2015" or "module": "esnext", you'll need to also activate 

"allowSyntheticDefaultImports": true
to import CommonJS modules (like React) as defaults.

Answer №2

I too encountered the same problem,

  • This issue seems to be related to a specific version of TypeScript
  • Here are the steps I took to resolve it (and it worked for me)
  1. Check your project's package.json file to ensure that TypeScript is listed under dependencies devDependencies{ "typescript": "^2.5.2" }
  2. Determine the installed version of TypeScript on your system by running the command "tsc -version" in the terminal
  • This will display the globally installed version of TypeScript
  • Output version - 2.9.1
  1. Update the version number inside package.json to match the version installed on your system.

devDependencies{ "typescript": "^2.9.1" }

Hopefully this resolves the issue!!!!!!!!!!!!

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Uploading files in Angular 5 with additional properties of other objects

I am facing a challenge with uploading a file as part of a property to an object within a form. Most documentations I have come across only focus on services that handle standalone files. In my case, I have a form with various text inputs and date pickers, ...

angulartypescriptasp.net-core-webaping-file-upload

Complete only the fields specified in the Interface definition

I have been developing a shopping cart service that implements a method to add a specified JSON object to a cart object. However, only the defined fields in the IProduct interface should be populated. JSON Object { "title": "Title 1", "descriptio ...

jsonangulartypescript

What are the specific types needed to specify the esm exports in a Typescript file?

How can you define the full signature of a Typescript's file exports on the file itself? Consider the following example: // Example.ts export async function getExample() { const response = await fetch('/example'); return response.text() ...

typescripttypescript-typings

Disseminate several outcomes using a Discord bot

My first experience using stackoverflow was to seek help regarding a bot created to post results whenever a new episode of a show in the search list is added on nyaa.si. The issue I'm facing is that the bot posts the same episode multiple times within ...

javascripttypescriptdiscord.js

With a GroupAvatar, my Avatar named "max" likes to dance to the beat of its own drum rather than following the rules of my

I am currently working on creating an AvatarGroup using MaterialUi. I have successfully applied a style to all my avatars, except for the avatar that is automatically generated by AvatarGroup when the "max" parameter is defined. const styles = makeStyl ...

javascriptreactjstypescriptmaterial-uiavatar

What steps can I take to prevent encountering a Typescript Error (TS2345) within the StatePropertyAccessor of the Microsoft Bot Framework while setting a property?

During the process of constructing a bot in Typescript, I encountered TS2345 error with Typescript version 3.7.2. This error is causing issues when attempting to create properties dynamically, even if they are undefined, or referencing them in the statePro ...

javascripttypescriptbotframeworkstate

Navigating to the main directory in Angular 2

I am currently diving into the world of Angular 2 and attempting to create my very first application. I am following a tutorial from Barbarian Meets Coding to guide me through the process. Following the steps outlined in the tutorial, I have set up my appl ...

apacheangulartypescriptserverlocalhost

Importing from the project root is a common practice in Typescript

My project structure is organized as follows: .dist classes namespace1 module.js public routes index.js app.js config.js src classes namespace1 module.ts public routes index.ts app.ts config.ts The .dist f ...

javascriptnode.jstypescript

Jest is consistently encountering errors when trying to parse a JSON file located within the node_modules folder

I've been having trouble setting up my jest.config.js file to run tests on a TypeScript Vuejs app. Jest is throwing an error about encountering an unexpected token while parsing a JSON file in the node_modules folder. I'm not sure why this is hap ...

typescriptvue.jsjestjs

How can I transfer the data from a file to upload it in Angular 9 without manually typing it out?

In my Angular application, I have a functionality where users can upload two files for processing on the server. However, I am looking to add a feature that allows users to simply copy and paste the contents of the files into two textboxes instead of going ...

javascriptangulartypescriptangular9

Using Pulumi to Deploy helloworld Docker Images to Google Kubernetes Engine (GKE)

I am attempting to deploy a hello world container in Kubernetes using Pulumi and GCP. Essentially, I want to deploy this local helloworld container into an existing k8s cluster on GCP following the tutorial found here. Deploying local images is showcased ...

typescriptdockerkubernetesgoogle-cloud-platformpulumi

Why is TypeScript only supporting Promise<T> params and not Promise<T1,T2>?

I have been contemplating why the Promise<T> structure does not accept two parameters, such as Promise<T1,T2>. For instance: new Promise(function(resolve,reject){ ... err ? reject(err) : resolve(val); }); => ...

node.jstypescriptpromisetypescript2.3

What is the best way to encapsulate a class with generic type methods within a class that also has a generic type, but without any generic type arguments on its methods?

Below is an example of the code I am working with: class Stupid { private cache: Map<any, any> = new Map(); get<T>(key: string): T { return this.cache.get(key); }; } class Smart<T> extends Stupid { get(key: string): T { s ...

typescriptgenericstypescript-genericsgeneric-method

Declaring a function type with a void parameter type in typescript

Embarking on my journey with ts and currently exploring TypeGraphQL. I came across something that caught my attention and seems unfamiliar to me: export declare type ReturnTypeFunc = (returns?: void) => ReturnTypeFuncValue; How should this type be unde ...

typescript

Implement TypeScript to include type annotations on functions' parameters using destructuring and the rest syntax

Issues with Typing in Typescript Trying to learn typing in Typescript has presented some difficulties for me: I am struggling to convert this code into a strongly-typed format using Typescript. const omit = (prop: P, { [prop]: _, ...rest}) => rest; ...

typescripttypescript-typings

Display Module within Component using Angular 5

In the application I'm working on, I want to incorporate a variety of progress-loader-animations such as spinners or bars. To achieve this, I've developed a module with a component. Now, I'm trying to figure out how to display the module&ap ...

angulartypescriptmoduleangular5

The useAutocomplete function in Material-UI fails to consider the disabled

Currently, I am working on developing my own Autocomplete component by utilizing the useAutocomplete hook from the mui/base package. Most parts of the implementation are functioning correctly, except for the disabled option. My expectation is that the com ...

javascriptreactjstypescriptmaterial-uiautocomplete

Set the default requests header in Ionic 3 using data stored in Ionic Storage

This particular issue is related to retrieving a value from local storage. I am trying to set the default header (Authorization token) for all requests, but I can't seem to find a solution that works efficiently. Most of the resources available only e ...

angulartypescriptionic-framework

Efficiently replacing the new line character with a comma within an Angular application

One of the fields in my form allows users to input data either on a new line or separated by commas. However, when this data is sent via an API, a newline character (/n) is added for each new line which I do not want to display on the detail page. Here is ...

javascriptangulartypescriptangular8

The unpredictable behavior of the `this` keyword while troubleshooting a TypeScript program in VS code

Upon further investigation, it seems that the issue I encountered was related to using Chrome for debugging my full application. This led me to question whether the problem stemmed from TypeScript or VS Code. Before submitting my findings, I decided to sw ...

node.jstypescriptdebuggingvisual-studio-codevscode-debugger