The clash between the definitions of identifiers in this file and another (@types/jasmine) is causing error TS6200

Question

The clash between the definitions of identifiers in this file and another (@types/jasmine) is causing error TS6200

While trying to build my project with Angular CLI, I am encountering the following error message:

ERROR in ../my-app/node_modules/@types/jasmine/index.d.ts(18,1): error TS6200: Definitions of the following identifiers conflict with those in another file: Expected, SpyObjMethodNames, clock, CustomEqualityTester, CustomMatcherFactory, ExpectationFailed, SpecFunction, SpyObj, jasmine

Working on VSCode, I noticed that I could view the conflicting file by going to the specified line.

Upon checking, the file was located at:

/Users/<user_name>/Library/Caches/typescript/3.3/node_modules/@types/jasmine/ts3.1/index.d.ts

I'm confused as to why the TypeScript compiler is referring to this cached type definition. Any insights on what might be causing this?

Appreciate any help,

angular typescript jasmine

Answer 1

Answer №1

Just provided a solution for the same issue in this post: Definitions of identifiers conflict with those in another file

Reiterating the solution.

Please review the types subsection in your tsconfig.spec.json, it is likely causing the problem.

"types": [
  "jasmine",
  "node"
]

I removed jasmine from my types section, which now looks like this:

"types": [
  "node"
]

This resolved the issue for me.

Answer 2

Just provided a solution for the same issue in this post: Definitions of identifiers conflict with those in another file

Reiterating the solution.

Please review the types subsection in your tsconfig.spec.json, it is likely causing the problem.

"types": [
  "jasmine",
  "node"
]

I removed jasmine from my types section, which now looks like this:

"types": [
  "node"
]

This resolved the issue for me.

Answer 3

Answer №2

Encountering similar issues during the transition from Angular 6.x to 8.x (TypeScript 3.5+), specifically with conflicting @types/jasmine type-files (index.d.ts & 3.1/index.d.ts), I resolved the problem in the following manner:

Summary of Solution

Deleted @types/jasmine from package.json and incorporated its 3.1/index.d.ts as a static file within my source code.
Removed @types/jasminewd2 from package.json and included it as a static file since it references @types/jasmine.
Adjusted certain configuration files to acknowledge the presence of the static-type-files.
Reinstalled libraries

Detailed Steps

1. Removal:

Eliminated entries from package.json

   "devDependencies": {
       ...
       "@types/jasmine": "3.4.0",
       "@types/jasminewd2": "2.0.6",
       ...
   }

2. Addition:

Added folders & files to the file structure below src-folder

src (folder)
   ...
   @types
      jasmine
         index.d.ts (from node_modules/@types/jasmine/3.1/index.d.ts)
      jasminewd2
         index.d.ts (from node_modules/@types/jasminewd2/index.d.ts)

3. Configuration Changes:

tsconfig.json (replace XXX with your folder structure)

   ...
   "typeRoots": [
      ...
      "src/ XXX /@types"
   ]
   ...

tsconfig.spec.json

   ...
   "types": [
      ...
      "jasminewd2"
   ]
   ...

4. Library Reinstallation

Execute npm install

If Conflicts Resurface

Reverse the above steps
Reinstall packages using

npm install @types/jasmine --save-dev

npm install @types/jasminewd2 --save-dev

Additional Insight

Given that only a few related complaints were found online, it is conceivable that the provided solution is temporary, suggesting there might be a more optimal fix for this issue. It's possible that an unresolved error within the Angular project's configuration is causing a dilemma where choosing between "using TypeScript below 3.1" or "using TypeScript from 3.1 onwards" is not feasible within @types/jasmine.

error TS6200: Definitions of the following identifiers conflict with those in another file (@types/jasmine)
Definitions of identifiers conflict with those in another file

Answer 4

Encountering similar issues during the transition from Angular 6.x to 8.x (TypeScript 3.5+), specifically with conflicting @types/jasmine type-files (index.d.ts & 3.1/index.d.ts), I resolved the problem in the following manner:

Summary of Solution

Deleted @types/jasmine from package.json and incorporated its 3.1/index.d.ts as a static file within my source code.
Removed @types/jasminewd2 from package.json and included it as a static file since it references @types/jasmine.
Adjusted certain configuration files to acknowledge the presence of the static-type-files.
Reinstalled libraries

Detailed Steps

1. Removal:

Eliminated entries from package.json

   "devDependencies": {
       ...
       "@types/jasmine": "3.4.0",
       "@types/jasminewd2": "2.0.6",
       ...
   }

2. Addition:

Added folders & files to the file structure below src-folder

src (folder)
   ...
   @types
      jasmine
         index.d.ts (from node_modules/@types/jasmine/3.1/index.d.ts)
      jasminewd2
         index.d.ts (from node_modules/@types/jasminewd2/index.d.ts)

3. Configuration Changes:

tsconfig.json (replace XXX with your folder structure)

   ...
   "typeRoots": [
      ...
      "src/ XXX /@types"
   ]
   ...

tsconfig.spec.json

   ...
   "types": [
      ...
      "jasminewd2"
   ]
   ...

4. Library Reinstallation

Execute npm install

If Conflicts Resurface

Reverse the above steps
Reinstall packages using

npm install @types/jasmine --save-dev

npm install @types/jasminewd2 --save-dev

Additional Insight

Given that only a few related complaints were found online, it is conceivable that the provided solution is temporary, suggesting there might be a more optimal fix for this issue. It's possible that an unresolved error within the Angular project's configuration is causing a dilemma where choosing between "using TypeScript below 3.1" or "using TypeScript from 3.1 onwards" is not feasible within @types/jasmine.

error TS6200: Definitions of the following identifiers conflict with those in another file (@types/jasmine)
Definitions of identifiers conflict with those in another file

Answer 5

Answer №3

I had to include the skipLibCheck property in my tsconfig.json configuration file.

{
  "compilerOptions": {
    "skipLibCheck": true,
    // ...
  }
}

Attention

According to typescript,

A situation where you might need to use skipLibCheck is when there exist duplicate library type definitions in your node_modules directory. In such cases, it is recommended to explore solutions like yarn's resolutions to ensure only one version of that dependency exists in your project or delve into understanding how the dependency resolution works to resolve the issue without relying on extra tools.

Answer 6

I had to include the skipLibCheck property in my tsconfig.json configuration file.

{
  "compilerOptions": {
    "skipLibCheck": true,
    // ...
  }
}

Attention

According to typescript,

A situation where you might need to use skipLibCheck is when there exist duplicate library type definitions in your node_modules directory. In such cases, it is recommended to explore solutions like yarn's resolutions to ensure only one version of that dependency exists in your project or delve into understanding how the dependency resolution works to resolve the issue without relying on extra tools.

Answer 7

Answer №4

If you are encountering an issue with mongoose and types, it is important to note that starting from version 5.11, types are included in mongoose by default. Therefore, removing the @types/mongoose from your devDependencies should resolve the issue. For more information, you can refer to this thread: Discussion on Type Definitions conflict with those in mongoose 5.11 #49950

Answer 8

If you are encountering an issue with mongoose and types, it is important to note that starting from version 5.11, types are included in mongoose by default. Therefore, removing the @types/mongoose from your devDependencies should resolve the issue. For more information, you can refer to this thread: Discussion on Type Definitions conflict with those in mongoose 5.11 #49950

Answer 9

Answer №5

In my case, I had TypeScript set up on a global level.

To check if it's installed globally, you can use the command npm ls -g --depth 0.

If you want to uninstall it from your global settings, run npm uninstall -g typescript.

Answer 10

In my case, I had TypeScript set up on a global level.

To check if it's installed globally, you can use the command npm ls -g --depth 0.

If you want to uninstall it from your global settings, run npm uninstall -g typescript.

The clash between the definitions of identifiers in this file and another (@types/jasmine) is causing error TS6200

Answer №1

Answer №2

Summary of Solution

Detailed Steps

If Conflicts Resurface

Additional Insight

Answer №3

Attention

Answer №4

Answer №5

Similar questions

The discord.js TypeScript is throwing an error stating that the 'index.ts' file is missing when trying to run 'ts-node index.ts'

Using TypeScript with React: Specifying a type when calling a React component

Angular Custom Input Form: Tailored to Your Specific Needs

Tips for creating a breadcrumb navigation component in Angular inspired by the design of Windows File Explorer

Why doesn't package.json typically utilize the preset values stored in the .npmrc file?

Issue with MongoDB $push within an Array of Arrays: The shorthand property 'elements' does not have a value available in scope

The concealed [hidden] attribute in Angular2 triggers the display of the element after a brief delay

Ionic: Implementing a clear text field function when the ion-back-button is clicked

"Unearthing a skeleton within the client component while the server action unfolds in next

Ensuring that the field is empty is acceptable as long as the validators are configured to enforce

Verify FileReader.onload function using Jasmine and AngularJS

Should I use connect or refCount with Angular and rxjs?

Step-by-step guide to creating a custom wrapper in React that modifies the props for a component

How can you transform an object literal AST from a TypeScript file into executable code?

Angular Error: Unable to access properties of null (specifically 'validators')

Error: The function being called in <class> is not recognized as a function

Angular's mat table paginator now efficiently loads all data directly onto the first page

Angular: determining if the current route or page is secured by a guard

Tips for capturing and storing video with HTML5 WebRTC

Error occurs in the compiler when a variable is utilized as a function