Add library definition for component-emitter (flow-typed#1522)

definitions/npm/component-emitter_v1.x.x/flow_v0.34.x-/component-emitter_v1.x.x.js

@@ -0,0 +1,22 @@
+declare module "component-emitter" {
+ declare type Callback = (...args: mixed[]) => void;
+
+ declare class Emitter {
+ static (base?: {}): this;
+ on(event: string, cb: Callback): this;
+ addEventListener(event: string, cb: Callback): this;
+
+ once(event: string, cb: Callback): this;
+
+ off(event: string, cb: Callback): this;
+ removeListener(event: string, cb: Callback): this;
+ removeAllListeners(event: string, cb: Callback): this;
+ removeEventListener(event: string, cb: Callback): this;
+
+ emit(event: string, payload: mixed): this;
+ listeners(event: string): Callback[];
+ hasListeners(event: string): boolean;
+ }
+
+ declare export default typeof Emitter
+}

definitions/npm/component-emitter_v1.x.x/test_component-emitter_v1.x.x.js

@@ -0,0 +1,23 @@
+import Emitter from "component-emitter";
+
+Emitter();
+Emitter({});
+Emitter({ foo: "bar" });
+
+const e = Emitter();
+e ===
+ e
+ .on("on", ok => {})
+ .addEventListener("addEventListener", ok => {})
+ .once("once", ok => {})
+ .off("off", ok => {})
+ .removeListener("removeListener", ok => {})
+ .removeAllListeners("removeAllListeners", ok => {})
+ .removeEventListener("removeEventListener", ok => {})
+ .emit("foo", { bar: "baz" });
+
+e.listeners("foo").length;
+e.hasListeners("foo");
+
+// $ExpectError
+Emitter(5);