Nuxt/docs/3.api/4.kit/3.compatibility.md

title	description
Compatibility	Nuxt Kit provides a set of utilities to help you check the compatibility of your modules with different Nuxt versions.

Compatibility

source code

Nuxt Kit utilities can be used in Nuxt 3, Nuxt 2 with Bridge and even Nuxt 2 without Bridge. To make sure your module is compatible with all versions, you can use the checkNuxtCompatibility, assertNuxtCompatibility and hasNuxtCompatibility functions. They will check if the current Nuxt version meets the constraints you provide. Also you can use isNuxt2, isNuxt3 and getNuxtVersion functions for more granular checks.

checkNuxtCompatibility

Checks if constraints are met for the current Nuxt version. If not, returns an array of messages. Nuxt 2 version also checks for bridge support.

Type

async function checkNuxtCompatibility(
  constraints: NuxtCompatibility,
  nuxt?: Nuxt
): Promise<NuxtCompatibilityIssues>;

interface NuxtCompatibility {
  nuxt?: string;
  bridge?: boolean;
}

interface NuxtCompatibilityIssue {
  name: string;
  message: string;
}

interface NuxtCompatibilityIssues extends Array<NuxtCompatibilityIssue> {
  toString(): string;
}

Parameters

constraints

Type: NuxtCompatibility

Default: {}

Constraints to check for. It accepts the following properties:

• nuxt (optional)

  Type: string

  Nuxt version in semver format. Versions may be defined in Node.js way, for exmaple: >=2.15.0 <3.0.0.

• bridge (optional)

  Type: boolean

  If set to true, it will check if the current Nuxt version supports bridge.

nuxt

Type: Nuxt

Default: useNuxt()

Nuxt instance. If not provided, it will be retrieved from the context via useNuxt() call.

assertNuxtCompatibility

Asserts that constraints are met for the current Nuxt version. If not, throws an error with the list of issues as string.

Type

async function assertNuxtCompatibility(
  constraints: NuxtCompatibility,
  nuxt?: Nuxt
): Promise<true>;

interface NuxtCompatibility {
  nuxt?: string;
  bridge?: boolean;
}

Parameters

constraints

Type: NuxtCompatibility

Default: {}

Constraints to check for. It accepts the following properties:

• nuxt (optional)

  Type: string

  Nuxt version in semver format. Versions may be defined in Node.js way, for exmaple: >=2.15.0 <3.0.0.

• bridge (optional)

  Type: boolean

  If set to true, it will check if the current Nuxt version supports bridge.

nuxt

Type: Nuxt

Default: useNuxt()

Nuxt instance. If not provided, it will be retrieved from the context via useNuxt() call.

hasNuxtCompatibility

Checks if constraints are met for the current Nuxt version. Return true if all constraints are met, otherwise returns false. Nuxt 2 version also checks for bridge support.

Type

async function hasNuxtCompatibility(
  constraints: NuxtCompatibility,
  nuxt?: Nuxt
): Promise<boolean>;

interface NuxtCompatibility {
  nuxt?: string;
  bridge?: boolean;
}

Parameters

constraints

Type: NuxtCompatibility

Default: {}

Constraints to check for. It accepts the following properties:

• nuxt (optional)

  Type: string

  Nuxt version in semver format. Versions may be defined in Node.js way, for exmaple: >=2.15.0 <3.0.0.

• bridge (optional)

  Type: boolean

  If set to true, it will check if the current Nuxt version supports bridge.

nuxt

Type: Nuxt

Default: useNuxt()

Nuxt instance. If not provided, it will be retrieved from the context via useNuxt() call.

isNuxt2

Checks if the current Nuxt version is 2.x.

Type

function isNuxt2(nuxt?: Nuxt): boolean;

Parameters

nuxt

Type: Nuxt

Default: useNuxt()

Nuxt instance. If not provided, it will be retrieved from the context via useNuxt() call.

isNuxt3

Checks if the current Nuxt version is 3.x.

Type

function isNuxt3(nuxt?: Nuxt): boolean;

Parameters

nuxt

Type: Nuxt

Default: useNuxt()

Nuxt instance. If not provided, it will be retrieved from the context via useNuxt() call.

getNuxtVersion

Returns the current Nuxt version.

Type

function getNuxtVersion(nuxt?: Nuxt): string;

Parameters

nuxt

Type: Nuxt

Default: useNuxt()

Nuxt instance. If not provided, it will be retrieved from the context via useNuxt() call.