Add types to fetch,toast,bootstrap,svg (#31627)

Reduce `tsc` error count by 53. None of the changes has any runtime
effect.

web_src/js/modules/fetch.ts

@@ -1,4 +1,5 @@
 import {isObject} from '../utils.ts';
+import type {RequestData, RequestOpts} from '../types.ts';
 
 const {csrfToken} = window.config;
 
@@ -8,8 +9,9 @@ const safeMethods = new Set(['GET', 'HEAD', 'OPTIONS', 'TRACE']);
 // fetch wrapper, use below method name functions and the `data` option to pass in data
 // which will automatically set an appropriate headers. For json content, only object
 // and array types are currently supported.
-export function request(url, {method = 'GET', data, headers = {}, ...other} = {}) {
-  let body, contentType;
+export function request(url: string, {method = 'GET', data, headers = {}, ...other}: RequestOpts = {}) {
+  let body: RequestData;
+  let contentType: string;
   if (data instanceof FormData || data instanceof URLSearchParams) {
     body = data;
   } else if (isObject(data) || Array.isArray(data)) {
@@ -34,8 +36,8 @@ export function request(url, {method = 'GET', data, headers = {}, ...other} = {}
   });
 }
 
-export const GET = (url, opts) => request(url, {method: 'GET', ...opts});
-export const POST = (url, opts) => request(url, {method: 'POST', ...opts});
-export const PATCH = (url, opts) => request(url, {method: 'PATCH', ...opts});
-export const PUT = (url, opts) => request(url, {method: 'PUT', ...opts});
-export const DELETE = (url, opts) => request(url, {method: 'DELETE', ...opts});
+export const GET = (url: string, opts?: RequestOpts) => request(url, {method: 'GET', ...opts});
+export const POST = (url: string, opts?: RequestOpts) => request(url, {method: 'POST', ...opts});
+export const PATCH = (url: string, opts?: RequestOpts) => request(url, {method: 'PATCH', ...opts});
+export const PUT = (url: string, opts?: RequestOpts) => request(url, {method: 'PUT', ...opts});
+export const DELETE = (url: string, opts?: RequestOpts) => request(url, {method: 'DELETE', ...opts});

web_src/js/modules/toast.ts

@@ -2,8 +2,19 @@ import {htmlEscape} from 'escape-goat';
 import {svg} from '../svg.ts';
 import {animateOnce, showElem} from '../utils/dom.ts';
 import Toastify from 'toastify-js'; // don't use "async import", because when network error occurs, the "async import" also fails and nothing is shown
+import type {Intent} from '../types.ts';
+import type {SvgName} from '../svg.ts';
+import type {Options} from 'toastify-js';
 
-const levels = {
+type ToastLevels = {
+  [intent in Intent]: {
+    icon: SvgName,
+    background: string,
+    duration: number,
+  }
+}
+
+const levels: ToastLevels = {
   info: {
     icon: 'octicon-check',
     background: 'var(--color-green)',
@@ -21,8 +32,13 @@ const levels = {
   },
 };
 
+type ToastOpts = {
+  useHtmlBody?: boolean,
+  preventDuplicates?: boolean,
+} & Options;
+
 // See https://github.com/apvarun/toastify-js#api for options
-function showToast(message, level, {gravity, position, duration, useHtmlBody, preventDuplicates = true, ...other} = {}) {
+function showToast(message: string, level: Intent, {gravity, position, duration, useHtmlBody, preventDuplicates = true, ...other}: ToastOpts = {}) {
   const body = useHtmlBody ? String(message) : htmlEscape(message);
   const key = `${level}-${body}`;
 
@@ -59,14 +75,14 @@ function showToast(message, level, {gravity, position, duration, useHtmlBody, pr
   return toast;
 }
 
-export function showInfoToast(message, opts) {
+export function showInfoToast(message: string, opts?: ToastOpts) {
   return showToast(message, 'info', opts);
 }
 
-export function showWarningToast(message, opts) {
+export function showWarningToast(message: string, opts?: ToastOpts) {
   return showToast(message, 'warning', opts);
 }
 
-export function showErrorToast(message, opts) {
+export function showErrorToast(message: string, opts?: ToastOpts) {
   return showToast(message, 'error', opts);
 }