@microsoft/app-manifest

Package Name

@microsoft/app-manifest

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Features

A collection of TypeScript definitions and converters for Microsoft 365 App manifests.

• Strongly‑typed interfaces for three manifest types with all versions generated from Microsoft’s official JSON schemas, guaranteeing compile‑time type correctness:

  • Teams Manifest: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.19, 1.20, 1.21, 1.22, devPreview
  • Declarative Agent Manifest: v1.0, v1.2, v1.3, v1.4
  • API Plugin Manifest: v2.1, v2.2

• Bi‑directional conversions from JSON to manifest or from manifest to JSON(jsonToManifest and manifestToJson) with runtime type validation.

• Schema validation utilities to validating manifests against schemas

• File I/O helpers to conveniently load manifest from file or dump manifest to file in JSON format.

• Modular versioning: manifests organized per version file, avoiding type collisions.

Installation

npm install @microsoft/app-manifest 

Usage

Manipulate manifest

Automatic version inference

You can assign a manifest object directly to the discriminated union types (TeamsManifest, DeclarativeAgentManifest or APIPluginManifest) without specifying a concrete version type. TypeScript will infer the specific version based on the manifestVersion field:

Manually specified version

You can specify a concrete version type:

Manifest to/from JSON converters

Convert JSON string to Teams manifest type and check the version at run time:

const json = "{ \"manifestVersion\": \"1.20\", \"id\": \"app-id\", ...}";
const manifest = TeamsManifestConverter.jsonToManifest(json);
if (manifest.manifestVersion === "1.20") {
  // TypeScript will infer the type as TeamsManifestV1D20
  const manifestV1D20 = manifest as TeamsManifestV1D20.TeamsManifestV1D20;
  // You can now access properties specific to TeamsManifestV1D20
}

Convert JSON string to Teams manifest type by specifying the version at compile time:

const json = "{ \"manifestVersion\": \"1.20\", \"id\": \"app-id\", ...}";
const manifest = TeamsManifestConverter.jsonToManifest(json) as TeamsManifestV1D20.TeamsManifestV1D20;
// You can now access properties specific to TeamsManifestV1D20

Convert JSON string to declarative agent manifest type and api plugin manifest type:

const daManifest = DeclarativeAgentManifestConverter.jsonToManifest(daManifestJSON) as DeclarativeAgentManifest;
const pluginManifest = ApiPluginManifestConverter.jsonToManifest(pluginManifestJSON) as APIPluginManifest;

Convert manifest object to JSON string:

const jsonString = TeamsManifestConverter.manifestToJson(manifest);
const daJsonString = DeclarativeAgentManifestConverter.manifestToJson(daManifest);
const pluginJsonString = ApiPluginManifestConverter.manifestToJson(pluginManifest);

Note that the converts to/from JSON will throw runtime type check failures.

Manifest utilities

Validate manifest against schema:

const failures = await AppManifestUtils.validateAgainstSchema(manifest);

Read and write manifest:

const teamsManifestPath = "path/to/your/teams_manifest.json"; 
// read Teams manifest with type check
const teamsManifest1 = await AppManifestUtils.readTeamsManifest(teamsManifestPath);
// read Teams manifest and validate against schema
const [teamsManifest2, failedValidations1] = await AppManifestUtils.readAndValidateTeamsManifest(teamsManifestPath);
 
const daManifestPath = "path/to/your/da_manifest.json"; 
// read declarative agent manifest with type check
const daManifest1 = await AppManifestUtils.readDeclarativeAgentManifest(daManifestPath);
// read declarative agent manifest and validate against schema
const [daManifest2, failedValidations2] = await AppManifestUtils.readAndValidateDeclarativeAgentManifest(daManifestPath);

const pluginManifestPath = "path/to/your/plugin_manifest.json"; 
// read API plugin manifest with type check
const pluginManifest1 = await AppManifestUtils.readApiPluginManifest(pluginManifestPath);
// read API plugin manifest and validate against schema
const [pluginManifest2, failedValidations3] = await AppManifestUtils.readAndValidateApiPluginManifest(pluginManifestPath);