Exploring the World of Typescript Types for import.meta.env

Question

Exploring the World of Typescript Types for import.meta.env

Currently, I am utilizing the Vite framework which injects environment variables into import.meta.env.

In the past, I was successful in creating a file named env.d.ts to provide types for process.env.

declare global {
  namespace NodeJS {
    interface ProcessEnv {
      GITHUB_AUTH_TOKEN: string;
      NODE_ENV: 'development' | 'production';
      PORT?: string;
      PWD: string;
    }
  }
}

I have attempted the following approach, but it did not yield the desired results.

declare global {
  namespace NodeJS {
    interface ImportMeta {
      GITHUB_AUTH_TOKEN: string;
      NODE_ENV: 'development' | 'production';
      PORT?: string;
      PWD: string;
    }
  }
}

typescript vue.js vite

Answer 1

Answer №1

I encountered a similar issue and managed to resolve it by

updating my tsconfig.json file

{
  ...
  "compilerOptions": {
    ...
    "target": "ESNext",
    "types": ["vite/client"]
  }
}

Make sure you have vite installed as a dev dependency.

Answer 2

I encountered a similar issue and managed to resolve it by

updating my tsconfig.json file

{
  ...
  "compilerOptions": {
    ...
    "target": "ESNext",
    "types": ["vite/client"]
  }
}

Make sure you have vite installed as a dev dependency.

Answer 3

Answer №2

Check out the documentation provided at this link: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-9.html#support-for-importmeta

You're almost at the finish line:

interface ImportMeta {
  env: {
    GITHUB_AUTH_TOKEN: string;
    NODE_ENV: 'development' | 'production';
    PORT?: string;
    PWD: string;
  };
}

Remember, in vite all environment variables must start with VITE_, so the current environment variables will not be accessible in the application.

Answer 4

Check out the documentation provided at this link: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-9.html#support-for-importmeta

You're almost at the finish line:

interface ImportMeta {
  env: {
    GITHUB_AUTH_TOKEN: string;
    NODE_ENV: 'development' | 'production';
    PORT?: string;
    PWD: string;
  };
}

Remember, in vite all environment variables must start with VITE_, so the current environment variables will not be accessible in the application.

Answer 5

Answer №3

After some trial and error, I managed to successfully make it work with the code snippet below:

interface ImportMetaEnv {
  VITE_PORT?: string;
  VITE_AUTH_TOKEN?: string;
}

Answer 6

After some trial and error, I managed to successfully make it work with the code snippet below:

interface ImportMetaEnv {
  VITE_PORT?: string;
  VITE_AUTH_TOKEN?: string;
}

Answer 7

Answer №4

The link provided in the answer above has been recently updated to point to the latest documentation on Intellisense for TypeScript.

Ensure that the file env.d.ts is located within your src/ directory and includes a reference string at the beginning of the file.

Here is a complete example of how this should be structured:

/// <reference types="vite/client" />

interface ImportMetaEnv {
  readonly VITE_CUSTOM_ENV_VARIABLE: string
}

interface ImportMeta {
  readonly env: ImportMetaEnv
}

If you prefer using a different variable prefix instead of `VITE_`

You can easily customize the variable prefix by modifying your Vite configuration settings. Find out more about this feature here:

{
  envPrefix: 'YOURPREFIX_',
}

Answer 8

The link provided in the answer above has been recently updated to point to the latest documentation on Intellisense for TypeScript.

Ensure that the file env.d.ts is located within your src/ directory and includes a reference string at the beginning of the file.

Here is a complete example of how this should be structured:

/// <reference types="vite/client" />

interface ImportMetaEnv {
  readonly VITE_CUSTOM_ENV_VARIABLE: string
}

interface ImportMeta {
  readonly env: ImportMetaEnv
}

If you prefer using a different variable prefix instead of `VITE_`

You can easily customize the variable prefix by modifying your Vite configuration settings. Find out more about this feature here:

{
  envPrefix: 'YOURPREFIX_',
}

Answer 9

Answer №5

The official Vite documentation explains how to set up environment variables for intellisense in your project. Check it out here:

// env.d.ts
interface ImportMetaEnv extends Readonly<Record<string, string>> {
  readonly VITE_APP_TITLE: string
  // more env variables...
}

interface ImportMeta {
  readonly env: ImportMetaEnv
}

Answer 10

The official Vite documentation explains how to set up environment variables for intellisense in your project. Check it out here:

// env.d.ts
interface ImportMetaEnv extends Readonly<Record<string, string>> {
  readonly VITE_APP_TITLE: string
  // more env variables...
}

interface ImportMeta {
  readonly env: ImportMetaEnv
}

Answer 11

Answer №6

When using SvelteKit version 1.0.0-next.120 along with Vite 2.4.0, it is important to include the 'env' property in ImportMeta within global.d.ts. Take a look at this example:

interface ImportMeta {
  env: {
    VITE_DATABASE_URL?: string
    VITE_WEB_URL?: string
    VITE_BRAINTREE_GATEWAY?: string
    VITE_BRAINTREE_DESCRIPTOR?: string
    VITE_RECAPTCHA_SECRET_KEY?: string
    VITE_EMAIL_FROM?: string
    VITE_EMAIL_ADMINS?: string
    VITE_SEND_IN_BLUE_KEY?: string
    VITE_SEND_IN_BLUE_URL?: string
    VITE_RECAPTCHA_SITE_KEY?: string
  }
}

Answer 12

When using SvelteKit version 1.0.0-next.120 along with Vite 2.4.0, it is important to include the 'env' property in ImportMeta within global.d.ts. Take a look at this example:

interface ImportMeta {
  env: {
    VITE_DATABASE_URL?: string
    VITE_WEB_URL?: string
    VITE_BRAINTREE_GATEWAY?: string
    VITE_BRAINTREE_DESCRIPTOR?: string
    VITE_RECAPTCHA_SECRET_KEY?: string
    VITE_EMAIL_FROM?: string
    VITE_EMAIL_ADMINS?: string
    VITE_SEND_IN_BLUE_KEY?: string
    VITE_SEND_IN_BLUE_URL?: string
    VITE_RECAPTCHA_SITE_KEY?: string
  }
}

Answer 13

Answer №7

After struggling with an issue in vite's documentation example, I discovered that it doesn't support importing another type easily.

Let's consider the scenario where VITE_CUSTOM_ENV_VARIABLE is of type MyCustomType.

interface ImportMetaEnv {
  readonly VITE_CUSTOM_ENV_VARIABLE: import('./<your_path>/MyCustomType').MyCustomType

  // It may be necessary to specify original values from vite if you remove <reference types="vite/client" /> line
  readonly BASE_URL: string;
  readonly MODE: string;
  readonly DEV: boolean;
  readonly PROD: boolean;
  readonly SSR: boolean;
}

interface ImportMeta {
  readonly env: ImportMetaEnv
}

In addition, I suggest removing the

/// <reference types="vite/client" />

line to avoid potential issues with the type of VITE_CUSTOM_ENV_VARIABLE becoming MyCustomType or any.

Answer 14

After struggling with an issue in vite's documentation example, I discovered that it doesn't support importing another type easily.

Let's consider the scenario where VITE_CUSTOM_ENV_VARIABLE is of type MyCustomType.

interface ImportMetaEnv {
  readonly VITE_CUSTOM_ENV_VARIABLE: import('./<your_path>/MyCustomType').MyCustomType

  // It may be necessary to specify original values from vite if you remove <reference types="vite/client" /> line
  readonly BASE_URL: string;
  readonly MODE: string;
  readonly DEV: boolean;
  readonly PROD: boolean;
  readonly SSR: boolean;
}

interface ImportMeta {
  readonly env: ImportMetaEnv
}

In addition, I suggest removing the

/// <reference types="vite/client" />

line to avoid potential issues with the type of VITE_CUSTOM_ENV_VARIABLE becoming MyCustomType or any.

Answer 15

Answer №8

Having encountered a comparable issue while attempting to leverage environment variables in TypeScript with Vite on React JS, I managed to resolve it by updating the "vite-env.d.ts" file as follows:

interface ImportMeta {
  env: {
    apiKey: string
    authToken: string
  }
}

Answer 16

Having encountered a comparable issue while attempting to leverage environment variables in TypeScript with Vite on React JS, I managed to resolve it by updating the "vite-env.d.ts" file as follows:

interface ImportMeta {
  env: {
    apiKey: string
    authToken: string
  }
}

Answer 17

Answer №9

To achieve a cleaner solution, I discovered that the best method was to extend their existing class and introduce our keys separately:

// customEnv.d.ts

/**
 * Definition of our customized environment variables.
 * 
 * (Find more details at https://stackoverflow.com/a/65230984/3423324)
 */
interface CustomImportMetaEnv extends Readonly<Record<string, string>> {
  readonly CUSTOM_API_SERVER_HOST: string,
  readonly CUSTOM_API_SERVER_PORT: string
}

interface ImportMeta extends import('vite/types/importMeta').ImportMeta {
  // By incorporating the original vite values, the need for <reference types="vite/client" /> is eliminated.
  readonly env: CustomImportMetaEnv & import('vite/types/importMeta').ImportMetaEnv
}

With this implementation, the documentation for CUSTOM_API_SERVER_HOST and CUSTOM_API_SERVER_PORT is now properly outlined.

Moreover, you can still access Vite's default variables like BASE_URL, along with other hints under meta.* such as import.meta.glob()

Answer 18

To achieve a cleaner solution, I discovered that the best method was to extend their existing class and introduce our keys separately:

// customEnv.d.ts

/**
 * Definition of our customized environment variables.
 * 
 * (Find more details at https://stackoverflow.com/a/65230984/3423324)
 */
interface CustomImportMetaEnv extends Readonly<Record<string, string>> {
  readonly CUSTOM_API_SERVER_HOST: string,
  readonly CUSTOM_API_SERVER_PORT: string
}

interface ImportMeta extends import('vite/types/importMeta').ImportMeta {
  // By incorporating the original vite values, the need for <reference types="vite/client" /> is eliminated.
  readonly env: CustomImportMetaEnv & import('vite/types/importMeta').ImportMetaEnv
}

With this implementation, the documentation for CUSTOM_API_SERVER_HOST and CUSTOM_API_SERVER_PORT is now properly outlined.

Moreover, you can still access Vite's default variables like BASE_URL, along with other hints under meta.* such as import.meta.glob()

Answer 19

Answer №10

In my opinion, the names ImportMeta and ImportMetaEnv must remain unchanged to be properly identified.

Within tsconfig.json: "compilerOptions": { "types": ["./src/env.d.ts"] }

File location: src/env.d.ts

interface ImportMetaEnv extends import('vite/types/importMeta').ImportMetaEnv {
    readonly VITE_API_SERVER_HOST: string,
}

interface ImportMeta extends import('vite/types/importMeta').ImportMeta {
    readonly env: ImportMetaEnv
}

Answer 20

In my opinion, the names ImportMeta and ImportMetaEnv must remain unchanged to be properly identified.

Within tsconfig.json: "compilerOptions": { "types": ["./src/env.d.ts"] }

File location: src/env.d.ts

interface ImportMetaEnv extends import('vite/types/importMeta').ImportMetaEnv {
    readonly VITE_API_SERVER_HOST: string,
}

interface ImportMeta extends import('vite/types/importMeta').ImportMeta {
    readonly env: ImportMetaEnv
}

Exploring the World of Typescript Types for import.meta.env

Answer №1

Answer №2

Answer №3

Answer №4

If you prefer using a different variable prefix instead of `VITE_`

Answer №5

Answer №6

Answer №7

Answer №8

Answer №9

Answer №10

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Exploring the World of Typescript Types for import.meta.env

Answer №1

Answer №2

Answer №3

Answer №4

If you prefer using a different variable prefix instead of VITE_

Answer №5

Answer №6

Answer №7

Answer №8

Answer №9

Answer №10

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