Add type defintions

package.json

@@ -20,6 +20,7 @@
   },
   "license": "UNLICENSE",
   "devDependencies": {
+    "@types/node": "^10.17.14",
     "canvas": "2.5.0"
   }
 }

types/index.d.ts

@@ -0,0 +1,84 @@
+/// <reference types="node" />
+
+interface ByteArray {
+  /**
+   * Get the data as a Node.js `Buffer`.
+   */
+  getData(): Buffer
+}
+
+interface ImageDataLike {
+  readonly data: Uint8ClampedArray
+}
+
+interface CanvasLike {
+  getImageData(sx: number, sy: number, sw: number, sh: number): ImageDataLike
+}
+
+declare class GIFEncoder {
+  /**
+   * Create a new GIFEncoder
+   * @param width the width of the images in pixels.
+   * @param height the height of images in pixels.
+   * @param algorithm `neuquant` or `octree`. `neuquant` if undefined.
+   * @param useOptimizer enables/disables optimizer. `false` if undefined.
+   * @param totalFrames total number of images. `0` if undefined.
+   */
+  constructor(width: number, 
+    height: number, 
+    algorithm?: "neuquant" | "octree", 
+    useOptimizer?: boolean, 
+    totalFrames?: number)
+
+  /**
+   * Starts the encoder.
+   */
+  start(): void
+
+  /**
+   * Adds a frame to the GIF.
+   * @param context Node-canvas or DOM canvas context.
+   */
+  addFrame(context: CanvasLike): void
+
+  /**
+   * Sets delay between frames. Can be set once per frame.
+   * @param delay Number of milliseconds to display frame
+   */
+  setDelay(delay: number): void
+
+  /**
+   * Sets gif framerate. Alternative to `setDelay`.
+   * @param fps Number of frames per second to display.
+   */
+  setFrameRate(fps: number): void
+
+  /**
+   * Neuquant quality.
+   * @param quality Neuquant quality. `1` to `30`. `1` is best/slowest.
+   */
+  setQuality(quality: number): void
+
+  /**
+   * Optimizer threshold percentage
+   * @param threshold Optimizer threshold percentage, `0` to `100`.
+   */
+  setThreshold(threshold: number): void
+
+  /**
+   * Number of loops GIF does
+   * @param repeat 0 is forever, anything else is literal number of loops
+   */
+  setRepeat(repeat: number): void
+
+  /**
+   * Stops the encoder. Call after all frames are added.
+   */
+  finish(): void
+
+  /**
+   * The raw bytes representing the resulting GIF.
+   */
+  out: ByteArray
+}
+export = GIFEncoder

types/test.ts

@@ -0,0 +1,18 @@
+import GIFEncoder = require("gif-encoder-2")
+import * as Canvas from "canvas"
+
+const canvas = Canvas.createCanvas(1, 1)
+const context = canvas.getContext("2d")
+const gif = new GIFEncoder(1, 1, "neuquant")
+gif.start()
+gif.setDelay(1)
+gif.setFrameRate(30)
+gif.setQuality(1)
+gif.setRepeat(0)
+gif.setThreshold(0)
+gif.addFrame(context)
+gif.finish()
+const image = gif.out.getData()
+
+const gif2 = new GIFEncoder(1, 1, "octree", true, 1)
+const gif3 = new GIFEncoder(1, 1)

types/tsconfig.json

@@ -0,0 +1,13 @@
+{
+	"compilerOptions": {
+	  "module": "commonjs",
+	  "lib": ["es6"],
+	  "noImplicitAny": true,
+	  "noImplicitThis": true,
+	  "strictNullChecks": true,
+	  "strictFunctionTypes": true,
+	  "noEmit": true,
+	  "baseUrl": ".",
+	  "paths": { "gif-encoder-2": ["."] }
+	}
+}