support single quotes when decoding raw string

src/services/refactors/convertStringOrTemplateLiteral.ts

@@ -124,10 +124,10 @@ namespace ts.refactor.convertStringOrTemplateLiteral {
                 return { nodes: [node], containsString: false, areOperatorsValid: true };
             }
 
-            const nodeOperatorValid = node.operatorToken.kind === SyntaxKind.PlusToken;
-            const isPlus = leftOperatorValid && nodeOperatorValid && rightOperatorValid;
+            const currentOperatorValid = node.operatorToken.kind === SyntaxKind.PlusToken;
+            const areOperatorsValid = leftOperatorValid && currentOperatorValid && rightOperatorValid;
 
-            return { nodes: leftNodes.concat(rightNodes), containsString: true, areOperatorsValid: isPlus };
+            return { nodes: leftNodes.concat(rightNodes), containsString: true, areOperatorsValid };
         }
 
         return { nodes: [node as Expression], containsString: isStringLiteral(node), areOperatorsValid: true };
@@ -179,10 +179,10 @@ namespace ts.refactor.convertStringOrTemplateLiteral {
     const octalToUnicode = (_match: string, grp: string) => String.fromCharCode(parseInt(grp, 8));
 
     function decodeRawString(content: string) {
-        const outerQuotes = /"((.|\s)*)"/;
-        const unicodeEscape = /\\u([\d\w]+)/gi;
-        const unicodeEscapeWithBraces = /\\u\{([\d\w]+\})/gi;
-        const hexEscape = /\\x([\d\w]+)/gi;
+        const outerQuotes = /["']((.|\s)*)["']/;
+        const unicodeEscape = /\\u(\w+)/gi;
+        const unicodeEscapeWithBraces = /\\u\{(\w+)\}/gi;
+        const hexEscape = /\\x(\w+)/gi;
         const octalEscape = /\\([0-7]+)/g;
 
         return content.replace(outerQuotes, (_match, grp) => grp)

tests/cases/fourslash/refactorConvertStringOrTemplateLiteral_ToStringNestedInner.ts

@@ -1,7 +1,7 @@
 /// <reference path='fourslash.ts' />
 
 //// const age = 42
-//// const foo = `foobar is a ${ age < 18 ? 'child' : /*x*/`/*y*/grown-up ${ age > 40 ? 'who needs probaply assistance' : ''}` }`
+//// const foo = `foobar is a ${ age < 18 ? 'child' : /*x*/`/*y*/grown-up ${ age > 40 ? 'who needs probably assistance' : ''}` }`
 
 goTo.select("x", "y");
 edit.applyRefactor({
@@ -10,5 +10,5 @@ edit.applyRefactor({
     actionDescription: "Convert to string concatenation",
     newContent:
 `const age = 42
-const foo = \`foobar is a \${ age < 18 ? 'child' : "grown-up " + (age > 40 ? 'who needs probaply assistance' : '') }\``,
+const foo = \`foobar is a \${ age < 18 ? 'child' : "grown-up " + (age > 40 ? 'who needs probably assistance' : '') }\``,
 });

tests/cases/fourslash/refactorConvertStringOrTemplateLiteral_ToStringOtherExprSeq.ts

@@ -0,0 +1,12 @@
+/// <reference path='fourslash.ts' />
+
+//// const foo = `/*x*/f/*y*/oobar is ${ 42 * 6 % 4} years old`
+
+goTo.select("x", "y");
+edit.applyRefactor({
+    refactorName: "Convert string concatenation or template literal",
+    actionName: "Convert to string concatenation",
+    actionDescription: "Convert to string concatenation",
+    newContent:
+`const foo = "foobar is " + 42 * 6 % 4 + " years old"`,
+});

tests/cases/fourslash/refactorConvertStringOrTemplateLiteral_ToTemplateAvailability.ts

@@ -2,7 +2,7 @@
 
 //// const age = 22
 //// const name = "Eddy"
-//// const /*z*/f/*y*/oo = /*x*/"/*w*/M/*v*/r/*u*/ " /*t*/+/*s*/ /*r*/n/*q*/ame + " is " + /*p*/a/*o*/ge + " years old"
+//// const /*z*/f/*y*/oo = /*x*/"/*w*/M/*v*/r/*u*/ " /*t*/+/*s*/ /*r*/n/*q*/ame + " is " + /*p*/a/*o*/ge * 4 / 2 + " years old"
 
 goTo.select("z", "y");
 verify.not.refactorAvailable("Convert string concatenation or template literal", "Convert to string concatenation");

tests/cases/fourslash/refactorConvertStringOrTemplateLiteral_ToTemplateOtherExprSeq.ts

@@ -0,0 +1,12 @@
+/// <reference path='fourslash.ts' />
+
+//// const foo = "/*x*/f/*y*/oobar is " + 42 * 6 / 4 + " years old"
+
+goTo.select("x", "y");
+edit.applyRefactor({
+    refactorName: "Convert string concatenation or template literal",
+    actionName: "Convert to template literal",
+    actionDescription: "Convert to template literal",
+    newContent:
+`const foo = \`foobar is \${42 * 6 / 4} years old\``,
+});

tests/cases/fourslash/refactorConvertStringOrTemplateLiteral_ToTemplatePrefixExpr.ts

@@ -1,6 +1,6 @@
 /// <reference path='fourslash.ts' />
 
-//// const foo = /*x*/4/*y*/2 + 6 + 23 + 12 +" years old"
+//// const foo = /*x*/4/*y*/2 - 6 * 4 + 23 / 12 +" years old"
 
 goTo.select("x", "y");
 edit.applyRefactor({
@@ -8,5 +8,5 @@ edit.applyRefactor({
     actionName: "Convert to template literal",
     actionDescription: "Convert to template literal",
     newContent:
-`const foo = \`\${42 + 6 + 23 + 12} years old\``,
+`const foo = \`\${42 - 6 * 4 + 23 / 12} years old\``,
 });

tests/cases/fourslash/refactorConvertStringOrTemplateLiteral_ToTemplateSingleQuote.ts

@@ -0,0 +1,12 @@
+/// <reference path='fourslash.ts' />
+
+//// const foo = '/*x*/f/*y*/oobar rocks'
+
+goTo.select("x", "y");
+edit.applyRefactor({
+    refactorName: "Convert string concatenation or template literal",
+    actionName: "Convert to template literal",
+    actionDescription: "Convert to template literal",
+    newContent:
+`const foo = \`foobar rocks\``,
+});