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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647import type { ExportSettings } from "./settings"
/** * The pure jSquash encode: downscale (Lanczos) when the scale is below * 100%, then encode through the format's codec. Each codec is imported * lazily so its wasm downloads only when the format is first used. Runs in * any JS context — the worker, the main thread, or node tests. */export const encodeImage = async ( image: ImageData, settings: ExportSettings,): Promise<Uint8Array> => { let source = image if (settings.scale !== 1) { // oxlint-disable-next-line ts-no-dynamic-import const { default: resize } = await import("@jsquash/resize") source = await resize(image, { width: Math.max(1, Math.round(image.width * settings.scale)), height: Math.max(1, Math.round(image.height * settings.scale)), method: "lanczos3", }) } const quality = settings.quality ?? 75 switch (settings.format) { case "png": { // oxlint-disable-next-line ts-no-dynamic-import -- lazy codec load const { encode } = await import("@jsquash/png") return new Uint8Array(await encode(source)) } case "jpeg": { // oxlint-disable-next-line ts-no-dynamic-import -- lazy codec load const { encode } = await import("@jsquash/jpeg") return new Uint8Array(await encode(source, { quality })) } case "webp": { // oxlint-disable-next-line ts-no-dynamic-import -- lazy codec load const { encode } = await import("@jsquash/webp") return new Uint8Array(await encode(source, { quality })) } case "avif": { // oxlint-disable-next-line ts-no-dynamic-import -- lazy codec load const { encode } = await import("@jsquash/avif") return new Uint8Array(await encode(source, { quality })) } }}