Restructure to support old versions (#13811)

* Restructure to support old versions

* Fix tests

codemirror/codemirror-matchbrackets.d.ts

@@ -5,7 +5,9 @@
 
 // See docs https://codemirror.net/doc/manual.html#addon_matchbrackets
 
-declare namespace CodeMirror {
+import * as CodeMirror from "codemirror";
+
+declare module "codemirror" {
     interface EditorConfiguration {
         //  when set to true, causes matching brackets to be highlighted whenever the cursor is next to them
         matchBrackets?: boolean;

codemirror/codemirror-runmode.d.ts

@@ -5,7 +5,9 @@
 
 // See docs https://codemirror.net/doc/manual.html#addon_runmode
 
-declare namespace CodeMirror {
+import * as CodeMirror from "codemirror";
+
+declare module "codemirror" {
 
     /**
      * Runs a CodeMirror mode over text without opening an editor instance.

codemirror/codemirror-showhint.d.ts

@@ -5,7 +5,9 @@
 
 // See docs https://codemirror.net/doc/manual.html#addon_show-hint
 
-declare namespace CodeMirror {
+import * as CodeMirror from "codemirror";
+
+declare module "codemirror" {
     var commands: any;
 
     /** Provides a framework for showing autocompletion hints. Defines editor.showHint, which takes an optional

codemirror/searchcursor.d.ts

@@ -3,7 +3,9 @@
 // Definitions by: jacqt <https://github.com/jacqt>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
-declare namespace CodeMirror {
+import * as CodeMirror from "codemirror";
+
+declare module "codemirror" {
     interface Doc {
         /** This method can be used to implement search/replace functionality.
          *  `query`: This can be a regular * expression or a string (only strings will match across lines -

codemirror/tsconfig.json

@@ -15,6 +15,14 @@
     },
     "files": [
         "index.d.ts",
-        "codemirror-tests.ts"
+        "codemirror-tests.ts",
+        "codemirror-matchbrackets.d.ts",
+        "codemirror-matchbrackets-tests.ts",
+        "codemirror-runmode.d.ts",
+        "codemirror-runmode-tests.ts",
+        "codemirror-showhint.d.ts",
+        "codemirror-showhint-tests.ts",
+        "searchcursor.d.ts",
+        "searchcursor-tests.ts"
     ]
 }