internal: Add lints for promises (#3733)

* Add lints for floating and misued promises

* Add logging async errors in main

* Add async error catch in test-utils

* Change any to unknown

* Trap promise errors and ignore more await warnings

* Add more ignores and toSync helper

* Fix more lint warnings

* Add more ignores and fixes

* Add more reject reporting

* Add accepting arbitrary parameters to toSync()

* Fix more lints

* Revert unintentional change to non-arrow function

* Revert unintentional change to use arrow function

* Fix new warnings in main with auto updater

* Fix formatting

* Change lints to error

This is what the recommended type checked rules do.

* Fix to properly report promise rejections

* Fix formatting

* Fix formatting

* Remove unused import

* Remove unused convenience function

* Move type helpers

* Fix to not return promise when caller doesn't expect it

* Add ignores to lsp code

packages/codemirror-lsp-client/src/client/index.ts

@@ -72,6 +72,7 @@ export class LanguageServerClient {
   async initialize() {
     // Start the client in the background.
     this.client.setNotifyFn(this.processNotifications.bind(this))
+    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     this.client.start()
 
     this.ready = true
@@ -195,6 +196,9 @@ export class LanguageServerClient {
   }
 
   private processNotifications(notification: LSP.NotificationMessage) {
-    for (const plugin of this.plugins) plugin.processNotification(notification)
+    for (const plugin of this.plugins) {
+      // eslint-disable-next-line @typescript-eslint/no-floating-promises
+      plugin.processNotification(notification)
+    }
   }
 }

packages/codemirror-lsp-client/src/plugin/format.ts

@@ -12,6 +12,7 @@ export default function lspFormatExt(
       run: (view: EditorView) => {
         let value = view.plugin(plugin)
         if (!value) return false
+        // eslint-disable-next-line @typescript-eslint/no-floating-promises
         value.requestFormatting()
         return true
       },

packages/codemirror-lsp-client/src/plugin/lsp.ts

@@ -117,6 +117,7 @@ export class LanguageServerPlugin implements PluginValue {
 
     this.processLspNotification = options.processLspNotification
 
+    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     this.initialize({
       documentText: this.getDocText(),
     })
@@ -149,6 +150,7 @@ export class LanguageServerPlugin implements PluginValue {
   }
 
   async initialize({ documentText }: { documentText: string }) {
+    // eslint-disable-next-line @typescript-eslint/no-misused-promises
     if (this.client.initializePromise) {
       await this.client.initializePromise
     }
@@ -162,7 +164,9 @@ export class LanguageServerPlugin implements PluginValue {
       },
     })
 
+    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     this.requestSemanticTokens()
+    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     this.updateFoldingRanges()
   }
 
@@ -225,7 +229,9 @@ export class LanguageServerPlugin implements PluginValue {
         contentChanges: [{ text: this.view.state.doc.toString() }],
       })
 
+      // eslint-disable-next-line @typescript-eslint/no-floating-promises
       this.requestSemanticTokens()
+      // eslint-disable-next-line @typescript-eslint/no-floating-promises
       this.updateFoldingRanges()
     } catch (e) {
       console.error(e)