wip

# Conflicts:
#	codecs/cpp.Dockerfile
#	codecs/imagequant/example.html
#	codecs/webp/dec/webp_dec.d.ts
#	codecs/webp/dec/webp_dec.js
#	codecs/webp/dec/webp_dec.wasm
#	codecs/webp/enc/webp_enc.d.ts
#	codecs/webp/enc/webp_enc.js
#	codecs/webp/enc/webp_enc.wasm
#	package-lock.json
#	package.json
#	src/codecs/tiny.webp
#	src_old/codecs/encoders.ts
#	src_old/codecs/processor-worker/tiny.avif
#	src_old/codecs/processor-worker/tiny.webp
#	src_old/codecs/tiny.webp
#	src_old/components/compress/index.tsx
#	src_old/lib/util.ts
#	src_old/sw/util.ts

src_old/codecs/resize/processor-meta.ts

@@ -0,0 +1,75 @@
+type BrowserResizeMethods =
+  | 'browser-pixelated'
+  | 'browser-low'
+  | 'browser-medium'
+  | 'browser-high';
+type WorkerResizeMethods =
+  | 'triangle'
+  | 'catrom'
+  | 'mitchell'
+  | 'lanczos3'
+  | 'hqx';
+const workerResizeMethods: WorkerResizeMethods[] = [
+  'triangle',
+  'catrom',
+  'mitchell',
+  'lanczos3',
+  'hqx',
+];
+
+export type ResizeOptions =
+  | BrowserResizeOptions
+  | WorkerResizeOptions
+  | VectorResizeOptions;
+
+export interface ResizeOptionsCommon {
+  width: number;
+  height: number;
+  fitMethod: 'stretch' | 'contain';
+}
+
+export interface BrowserResizeOptions extends ResizeOptionsCommon {
+  method: BrowserResizeMethods;
+}
+
+export interface WorkerResizeOptions extends ResizeOptionsCommon {
+  method: WorkerResizeMethods;
+  premultiply: boolean;
+  linearRGB: boolean;
+}
+
+export interface VectorResizeOptions extends ResizeOptionsCommon {
+  method: 'vector';
+}
+
+/**
+ * Return whether a set of options are worker resize options.
+ *
+ * @param opts
+ */
+export function isWorkerOptions(
+  opts: ResizeOptions,
+): opts is WorkerResizeOptions {
+  return (workerResizeMethods as string[]).includes(opts.method);
+}
+
+/**
+ * Return whether a set of options are from the HQ<n>X set
+ *
+ * @param opts
+ */
+export function isHqx(opts: ResizeOptions): opts is WorkerResizeOptions {
+  return opts.method === 'hqx';
+}
+
+export const defaultOptions: ResizeOptions = {
+  // Width and height will always default to the image size.
+  // This is set elsewhere.
+  width: 1,
+  height: 1,
+  // This will be set to 'vector' if the input is SVG.
+  method: 'lanczos3',
+  fitMethod: 'stretch',
+  premultiply: true,
+  linearRGB: true,
+};