Remove the unused text buffer from ScriptInfo

Author: sheetalkamat

src/server/editorServices.ts

@@ -38,7 +38,7 @@ namespace ts.server {
         path: Path;
         scriptKind: ScriptKind;
 
-        constructor(private host: ServerHost, public fileName: string, public content: string, public isOpen = false) {
+        constructor(private host: ServerHost, public fileName: string, content: string, public isOpen = false) {
             this.path = toPath(fileName, host.getCurrentDirectory(), createGetCanonicalFileName(host.useCaseSensitiveFileNames));
             this.svc = ScriptVersionCache.fromString(host, content);
         }

tests/cases/unittests/cachingInServerLSHost.ts

@@ -108,6 +108,8 @@ namespace ts {
             let diags = project.compilerService.languageService.getSemanticDiagnostics(imported.name);
             assert.equal(diags.length, 1);
 
+            let content = rootScriptInfo.getText();
+
             const originalFileExists = serverHost.fileExists;
             {
                 // patch fileExists to make sure that disk is not touched
@@ -118,7 +120,8 @@ namespace ts {
 
                 const newContent = `import {x} from "f1"
                 var x: string = 1;`;
-                rootScriptInfo.editContent(0, rootScriptInfo.content.length, newContent);
+                rootScriptInfo.editContent(0, content.length, newContent);
+                content = newContent;
                 // trigger synchronization to make sure that import will be fetched from the cache
                 diags = project.compilerService.languageService.getSemanticDiagnostics(imported.name);
                 // ensure file has correct number of errors after edit
@@ -135,7 +138,8 @@ namespace ts {
                     return originalFileExists.call(serverHost, fileName);
                 };
                 const newContent = `import {x} from "f2"`;
-                rootScriptInfo.editContent(0, rootScriptInfo.content.length, newContent);
+                rootScriptInfo.editContent(0, content.length, newContent);
+                content = newContent;
 
                 try {
                     // trigger synchronization to make sure that LSHost will try to find 'f2' module on disk
@@ -160,7 +164,8 @@ namespace ts {
                 };
 
                 const newContent = `import {x} from "f1"`;
-                rootScriptInfo.editContent(0, rootScriptInfo.content.length, newContent);
+                rootScriptInfo.editContent(0, content.length, newContent);
+                content = newContent;
                 project.compilerService.languageService.getSemanticDiagnostics(imported.name);
                 assert.isTrue(fileExistsCalled);
 
@@ -205,7 +210,7 @@ namespace ts {
             };
 
             const { project, rootScriptInfo } = createProject(root.name, serverHost);
-
+            const content = rootScriptInfo.getText();
             let diags = project.compilerService.languageService.getSemanticDiagnostics(root.name);
             assert.isTrue(fileExistsCalledForBar, "'fileExists' should be called");
             assert.isTrue(diags.length === 1, "one diagnostic expected");
@@ -214,7 +219,7 @@ namespace ts {
             // assert that import will success once file appear on disk
             fileMap[imported.name] = imported;
             fileExistsCalledForBar = false;
-            rootScriptInfo.editContent(0, rootScriptInfo.content.length, `import {y} from "bar"`);
+            rootScriptInfo.editContent(0, content.length, `import {y} from "bar"`);
 
             diags = project.compilerService.languageService.getSemanticDiagnostics(root.name);
             assert.isTrue(fileExistsCalledForBar, "'fileExists' should be called");