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Fix ImageLoader flow types to reflect possible error'd images

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This commit is contained in:
Niklas von Hertzen 2017-08-04 00:00:02 +08:00
parent 96fbe954e9
commit 9a7075252b
1 changed files with 13 additions and 13 deletions
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26
src/ImageLoader.js
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@ -5,7 +5,7 @@ import type Options from './index';
import type Logger from './Logger';
export type ImageElement = Image | HTMLCanvasElement;
type ImageCache = {[string]: Promise<ImageElement>};
type ImageCache = {[string]: Promise<?ImageElement>};
export default class ImageLoader {
origin: string;
@ -57,11 +57,6 @@ export default class ImageLoader {
const img = new Image();
img.onload = () => resolve(img);
img.onerror = reject;
/*
if (cors) {
img.crossOrigin = 'anonymous';
}
*/
img.src = src;
if (img.complete === true) {
resolve(img);
@ -83,11 +78,16 @@ export default class ImageLoader {
ready(): Promise<ImageStore> {
const keys = Object.keys(this.cache);
return Promise.all(keys.map(str => this.cache[str].catch(e => {
if (__DEV__) {
this.logger.log(`Unable to load image`, e);
}
}))).then(images => {
return Promise.all(
keys.map(str =>
this.cache[str].catch(e => {
if (__DEV__) {
this.logger.log(`Unable to load image`, e);
}
return null;
})
)
).then(images => {
if (__DEV__) {
this.logger.log('Finished loading images', images);
}
@ -98,9 +98,9 @@ export default class ImageLoader {
export class ImageStore {
_keys: Array<string>;
_images: Array<ImageElement>;
_images: Array<?ImageElement>;
constructor(keys: Array<string>, images: Array<ImageElement>) {
constructor(keys: Array<string>, images: Array<?ImageElement>) {
this._keys = keys;
this._images = images;
}