refactor(types): improve typing (#1317)

packages/compiler-sfc/src/compileTemplate.ts

@@ -58,19 +58,29 @@ export interface SFCTemplateCompileOptions {
   transformAssetUrls?: AssetURLOptions | AssetURLTagConfig | boolean
 }
   
+interface PreProcessor {
+  render(
+    source: string,
+    options: any,
+    cb: (err: Error | null, res: string) => void
+  ): void
+}
+
 function preprocess(
   { source, filename, preprocessOptions }: SFCTemplateCompileOptions,
-  preprocessor: any
+  preprocessor: PreProcessor
 ): string {
   // Consolidate exposes a callback based API, but the callback is in fact
   // called synchronously for most templating engines. In our case, we have to
   // expose a synchronous API so that it is usable in Jest transforms (which
   // have to be sync because they are applied via Node.js require hooks)
-  let res: any, err
+  let res: string = ''
+  let err: Error | null = null
+
   preprocessor.render(
     source,
     { filename, ...preprocessOptions },
-    (_err: Error | null, _res: string) => {
+    (_err, _res) => {
       if (_err) err = _err
       res = _res
     }

packages/runtime-core/src/components/KeepAlive.ts

@@ -252,7 +252,7 @@ function getName(comp: Component): string | void {
 
 function matches(pattern: MatchPattern, name: string): boolean {
   if (isArray(pattern)) {
-    return (pattern as any).some((p: string | RegExp) => matches(p, name))
+    return pattern.some((p: string | RegExp) => matches(p, name))
   } else if (isString(pattern)) {
     return pattern.split(',').indexOf(name) > -1
   } else if (pattern.test) {