{
  "id": "@typed/template/EventHandler#isEventHandler",
  "canonicalId": "@typed/template/EventHandler#isEventHandler",
  "symbol": {
    "id": "@typed/template/EventHandler#isEventHandler",
    "packageName": "@typed/template",
    "moduleName": "EventHandler",
    "exportName": "isEventHandler",
    "kind": "function",
    "signatures": [
      "export declare function isEventHandler<Ev extends Event, E = never, R = never>(handler: unknown): handler is EventHandler<Ev, E, R>;"
    ],
    "summary": "Checks if a value is an `EventHandler`.",
    "sections": {
      "Why": "The nominal key distinguishes handler descriptions from arbitrary functions\nbefore template compilation.",
      "Ownership and lifetime": "The guard only inspects the value and acquires nothing."
    },
    "examples": [
      {
        "language": "ts",
        "code": "import * as EventHandler from \"@typed/template/EventHandler\"\n\nconst handler = EventHandler.make((event) => console.log(\"Click\"))\nconst isHandler = EventHandler.isEventHandler(handler)\nconsole.log(isHandler) // true\n\nconst notHandler = (event: Event) => console.log(\"Click\")\nconst isNotHandler = EventHandler.isEventHandler(notHandler)\nconsole.log(isNotHandler) // false"
      }
    ],
    "relations": [],
    "source": {
      "file": "packages/template/src/EventHandler.ts",
      "line": 543
    },
    "since": "1.0.0",
    "category": "Event handler protocol"
  },
  "exposure": {
    "recordKind": "declaration",
    "id": "@typed/template/EventHandler#isEventHandler",
    "packageName": "@typed/template",
    "packageVersion": "1.0.0-beta.7",
    "moduleName": "EventHandler",
    "consumerSpecifier": "@typed/template/EventHandler",
    "exportName": "isEventHandler",
    "qualifiedName": "isEventHandler",
    "declarationKey": "declaration:2ed04584fded3605641f92d9",
    "family": "function",
    "signatures": [
      "export declare function isEventHandler<Ev extends Event, E = never, R = never>(handler: unknown): handler is EventHandler<Ev, E, R>;"
    ],
    "sourceSpans": [
      {
        "file": "packages/template/src/EventHandler.ts",
        "start": {
          "line": 543,
          "column": 1
        },
        "end": {
          "line": 547,
          "column": 2
        }
      }
    ],
    "aliases": [
      "@typed/template#EventHandler.isEventHandler"
    ],
    "isAlias": false,
    "static": false
  },
  "declaration": {
    "declarationKey": "declaration:2ed04584fded3605641f92d9",
    "name": "isEventHandler",
    "family": "function",
    "facets": [
      {
        "family": "function",
        "syntaxKind": "FunctionDeclaration",
        "signatures": [
          "export declare function isEventHandler<Ev extends Event, E = never, R = never>(handler: unknown): handler is EventHandler<Ev, E, R>;"
        ],
        "typeParameters": [
          "Ev extends Event",
          "E = never",
          "R = never"
        ],
        "sourceSpans": [
          {
            "file": "packages/template/src/EventHandler.ts",
            "start": {
              "line": 543,
              "column": 1
            },
            "end": {
              "line": 547,
              "column": 2
            }
          }
        ],
        "static": false,
        "readonly": false,
        "optional": false
      }
    ],
    "signatures": [
      "export declare function isEventHandler<Ev extends Event, E = never, R = never>(handler: unknown): handler is EventHandler<Ev, E, R>;"
    ],
    "typeParameters": [
      "Ev extends Event",
      "E = never",
      "R = never"
    ],
    "summary": "Checks if a value is an `EventHandler`.",
    "sections": {
      "Why": "The nominal key distinguishes handler descriptions from arbitrary functions\nbefore template compilation.",
      "Ownership and lifetime": "The guard only inspects the value and acquires nothing."
    },
    "examples": [
      {
        "language": "ts",
        "code": "import * as EventHandler from \"@typed/template/EventHandler\"\n\nconst handler = EventHandler.make((event) => console.log(\"Click\"))\nconst isHandler = EventHandler.isEventHandler(handler)\nconsole.log(isHandler) // true\n\nconst notHandler = (event: Event) => console.log(\"Click\")\nconst isNotHandler = EventHandler.isEventHandler(notHandler)\nconsole.log(isNotHandler) // false"
      }
    ],
    "sourceSpans": [
      {
        "file": "packages/template/src/EventHandler.ts",
        "start": {
          "line": 543,
          "column": 1
        },
        "end": {
          "line": 547,
          "column": 2
        }
      }
    ],
    "since": "1.0.0",
    "category": "Event handler protocol"
  }
}