feat(lsp): add TS quick fix code actions (#9396)

4 files changed, 222 insertions, 0 deletions

diff --git a/cli/tests/lsp/code_action_request.json b/cli/tests/lsp/code_action_request.json
new file mode 100644
index 000000000..af6cbee8b
--- /dev/null
+++ b/cli/tests/lsp/code_action_request.json
@@ -0,0 +1,44 @@
+{
+  "jsonrpc": "2.0",
+  "id": 2,
+  "method": "textDocument/codeAction",
+  "params": {
+    "textDocument": {
+      "uri": "file:///a/file.ts"
+    },
+    "range": {
+      "start": {
+        "line": 1,
+        "character": 2
+      },
+      "end": {
+        "line": 1,
+        "character": 7
+      }
+    },
+    "context": {
+      "diagnostics": [
+        {
+          "range": {
+            "start": {
+              "line": 1,
+              "character": 2
+            },
+            "end": {
+              "line": 1,
+              "character": 7
+            }
+          },
+          "severity": 1,
+          "code": 1308,
+          "source": "deno-ts",
+          "message": "'await' expressions are only allowed within async functions and at the top levels of modules.",
+          "relatedInformation": []
+        }
+      ],
+      "only": [
+        "quickfix"
+      ]
+    }
+  }
+}
diff --git a/cli/tests/lsp/code_action_response.json b/cli/tests/lsp/code_action_response.json
new file mode 100644
index 000000000..5af45ba7f
--- /dev/null
+++ b/cli/tests/lsp/code_action_response.json
@@ -0,0 +1,150 @@
+[
+  {
+    "title": "Add async modifier to containing function",
+    "kind": "quickfix",
+    "diagnostics": [
+      {
+        "range": {
+          "start": {
+            "line": 1,
+            "character": 2
+          },
+          "end": {
+            "line": 1,
+            "character": 7
+          }
+        },
+        "severity": 1,
+        "code": 1308,
+        "source": "deno-ts",
+        "message": "'await' expressions are only allowed within async functions and at the top levels of modules.",
+        "relatedInformation": []
+      }
+    ],
+    "edit": {
+      "documentChanges": [
+        {
+          "textDocument": {
+            "uri": "file:///a/file.ts",
+            "version": 1
+          },
+          "edits": [
+            {
+              "range": {
+                "start": {
+                  "line": 0,
+                  "character": 7
+                },
+                "end": {
+                  "line": 0,
+                  "character": 7
+                }
+              },
+              "newText": "async "
+            },
+            {
+              "range": {
+                "start": {
+                  "line": 0,
+                  "character": 21
+                },
+                "end": {
+                  "line": 0,
+                  "character": 25
+                }
+              },
+              "newText": "Promise<void>"
+            }
+          ]
+        }
+      ]
+    }
+  },
+  {
+    "title": "Add all missing 'async' modifiers",
+    "kind": "quickfix",
+    "diagnostics": [
+      {
+        "range": {
+          "start": {
+            "line": 1,
+            "character": 2
+          },
+          "end": {
+            "line": 1,
+            "character": 7
+          }
+        },
+        "severity": 1,
+        "code": 1308,
+        "source": "deno-ts",
+        "message": "'await' expressions are only allowed within async functions and at the top levels of modules.",
+        "relatedInformation": []
+      }
+    ],
+    "edit": {
+      "documentChanges": [
+        {
+          "textDocument": {
+            "uri": "file:///a/file.ts",
+            "version": 1
+          },
+          "edits": [
+            {
+              "range": {
+                "start": {
+                  "line": 0,
+                  "character": 7
+                },
+                "end": {
+                  "line": 0,
+                  "character": 7
+                }
+              },
+              "newText": "async "
+            },
+            {
+              "range": {
+                "start": {
+                  "line": 0,
+                  "character": 21
+                },
+                "end": {
+                  "line": 0,
+                  "character": 25
+                }
+              },
+              "newText": "Promise<void>"
+            },
+            {
+              "range": {
+                "start": {
+                  "line": 4,
+                  "character": 7
+                },
+                "end": {
+                  "line": 4,
+                  "character": 7
+                }
+              },
+              "newText": "async "
+            },
+            {
+              "range": {
+                "start": {
+                  "line": 4,
+                  "character": 21
+                },
+                "end": {
+                  "line": 4,
+                  "character": 25
+                }
+              },
+              "newText": "Promise<void>"
+            }
+          ]
+        }
+      ]
+    }
+  }
+]
diff --git a/cli/tests/lsp/did_open_notification_code_action.json b/cli/tests/lsp/did_open_notification_code_action.json
new file mode 100644
index 000000000..57559cf3c
--- /dev/null
+++ b/cli/tests/lsp/did_open_notification_code_action.json
@@ -0,0 +1,12 @@
+{
+  "jsonrpc": "2.0",
+  "method": "textDocument/didOpen",
+  "params": {
+    "textDocument": {
+      "uri": "file:///a/file.ts",
+      "languageId": "typescript",
+      "version": 1,
+      "text": "export function a(): void {\n  await Promise.resolve(\"a\");\n}\n\nexport function b(): void {\n  await Promise.resolve(\"b\");\n}\n"
+    }
+  }
+}
diff --git a/cli/tests/lsp/initialize_request.json b/cli/tests/lsp/initialize_request.json
index 46f96a2c5..eaea00a18 100644
--- a/cli/tests/lsp/initialize_request.json
+++ b/cli/tests/lsp/initialize_request.json
@@ -20,6 +20,22 @@
     },
     "capabilities": {
       "textDocument": {
+        "codeAction": {
+          "codeActionLiteralSupport": {
+            "codeActionKind": {
+              "valueSet": [
+                "quickfix"
+              ]
+            }
+          },
+          "isPreferredSupport": true,
+          "dataSupport": true,
+          "resolveSupport": {
+            "properties": [
+              "edit"
+            ]
+          }
+        },
         "synchronization": {
           "dynamicRegistration": true,
           "willSave": true,