fixed eslint

src/utils/uploader.ts

@@ -0,0 +1,33 @@
+import { eventChannel, END } from 'redux-saga';
+import { VALIDATORS } from '~/utils/validators';
+
+export const IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/jpg'];
+
+export function createUploader<T extends {}, R extends {}>
+  (callback: (args: any) => any, payload: R):
+  [(args: T) => (args: T & { onProgress: (current: number, total: number) => void }) => any, EventChannel<any>] {
+  let emit;
+
+  const chan = eventChannel(emitter => {
+    emit = emitter;
+    return () => null;
+  });
+
+  const onProgress = (current: number, total: number): void => {
+    emit(current >= total ? END : { ...payload, progress: parseFloat((current / total).toFixed(1)) });
+  };
+
+  const wrappedCallback = args => callback({ ...args, onProgress });
+
+  return [wrappedCallback, chan];
+}
+
+export const uploadGetThumb = async file => {
+  if (!file.type || !VALIDATORS.IS_IMAGE_MIME(file.type)) return '';
+
+  return await new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onloadend = () => resolve(reader.result || '');
+    reader.readAsDataURL(file);
+  });
+};