Add some utils, kinds

packages/lib/src/Tools.ts

@@ -353,6 +353,50 @@ export const pushToMapKey = <K, T>(m: Map<K, T[]>, k: K, v: T) => {
 export const switcher = <T>(k: string, m: Record<string, T>) =>
   m[k] === undefined ? m.default : m[k]
 
+// Fetch
+
+type FetchOpts = {
+  method?: string
+  headers?: Record<string, string | boolean>
+  body?: string | FormData
+}
+
+export const fetchJson = async (url: string, opts: FetchOpts = {}) => {
+  if (!opts.headers) {
+    opts.headers = {}
+  }
+
+  opts.headers["Accept"] = "application/json"
+
+  const res = await fetch(url, opts as RequestInit)
+  const json = await res.json()
+
+  return json
+}
+
+export const postJson = async <T>(url: string, data: T, opts: FetchOpts = {}) => {
+  if (!opts.method) {
+    opts.method = "POST"
+  }
+
+  if (!opts.headers) {
+    opts.headers = {}
+  }
+
+  opts.headers["Content-Type"] = "application/json"
+  opts.body = JSON.stringify(data)
+
+  return fetchJson(url, opts)
+}
+
+export const uploadFile = (url: string, fileObj: File) => {
+  const body = new FormData()
+
+  body.append("file", fileObj)
+
+  return fetchJson(url, {method: "POST", body})
+}
+
 // Random obscure stuff
 
 export const hexToBech32 = (prefix: string, url: string) =>