refactor: various improvements (#1296)

* refactor: various improvements

- enable no-use-before-define eslint rule
- shuffle code to conform to no-use-before-define eslint rule
- remove btoa dependency which is deprecated and replace with Buffer.from(string).toString('base64')
- convert some any types into useful ones
- add type annotations where possible
- remove unused @types/expect.js
- install @types/semver and ts-node which were missing
- repair and rewrite add-crowdin-contributors script
- remove export keyword from variables which are never consumed in another file
- remove unity indicator hack where linked issue was closed
- remove module declaration for kebab-case which is unused
- add missing state interface for certain components
- remove default exports for files which already have a named export
- export IRecipePreview so it can be used throughout codebase
- remove unused removeCacheForCallWith method from CachedRequest.ts
- cleanup unused colors and styles inside legacy theme

* - improve ColorPickerInput
- fix invalid DOM nesting with div inside p in EditSettingsForm
- fix progressbarAccentColor color picker not updating input when using slider
- install missing @types/react-color dependency

1 files changed, 12 insertions, 4 deletions

diff --git a/src/components/util/ErrorBoundary/index.tsx b/src/components/util/ErrorBoundary/index.tsx
index bef211ef9..66f860835 100644
--- a/src/components/util/ErrorBoundary/index.tsx
+++ b/src/components/util/ErrorBoundary/index.tsx
@@ -23,10 +23,18 @@ interface ErrorBoundaryProps extends WithStylesProps<typeof styles> {
   children?: React.ReactNode;
 }
 
-class ErrorBoundary extends Component<ErrorBoundaryProps> {
-  state = {
-    hasError: false,
-  };
+interface ErrorBoundaryState {
+  hasError: boolean;
+}
+
+class ErrorBoundary extends Component<ErrorBoundaryProps, ErrorBoundaryState> {
+  constructor(props) {
+    super(props);
+
+    this.state = {
+      hasError: false,
+    };
+  }
 
   componentDidCatch(): void {
     this.setState({ hasError: true });