Fix transpilation

`@types/temp` depends on `"@types/node": "*"`, so a new version of the `node.d.ts` is installed. This breaks our code. Fix the code, but we'll have to figure it out how to make sure it won't happen again.

Author: rosen-vladimirov

lib/sys-info.ts

@@ -68,7 +68,7 @@ export class SysInfo implements NativeScriptDoctor.ISysInfo {
 	public getJavaCompilerVersion(): Promise<string> {
 		return this.getValueForProperty(() => this.javaCompilerVerCache, async (): Promise<string> => {
 			const javaCompileExecutableName = "javac";
-			const javaHome = process.env.JAVA_HOME;
+			const javaHome = process.env["JAVA_HOME"];
 			const pathToJavaCompilerExecutable = javaHome ? path.join(javaHome, "bin", javaCompileExecutableName) : javaCompileExecutableName;
 			try {
 				const output = await this.childProcess.exec(`"${pathToJavaCompilerExecutable}" -version`);
@@ -135,7 +135,7 @@ export class SysInfo implements NativeScriptDoctor.ISysInfo {
 			let mobileDeviceDir: string;
 
 			if (this.hostInfo.isWindows) {
-				const commonProgramFiles = this.hostInfo.isWindows64 ? process.env["CommonProgramFiles(x86)"] : process.env.CommonProgramFiles;
+				const commonProgramFiles = this.hostInfo.isWindows64 ? process.env["CommonProgramFiles(x86)"] : process.env["CommonProgramFiles"];
 				coreFoundationDir = path.join(commonProgramFiles, "Apple", "Apple Application Support");
 				mobileDeviceDir = path.join(commonProgramFiles, "Apple", "Mobile Device Support");
 			} else if (this.hostInfo.isDarwin) {

test/sys-info.ts

@@ -153,7 +153,7 @@ describe("SysInfo unit tests", () => {
 
 	beforeEach(() => {
 		// We need to mock this because on Mac the tests in which the platform is mocked to Windows in the process there will be no CommonProgramFiles.
-		process.env.CommonProgramFiles = process.env.CommonProgramFiles || "mocked on mac";
+		process.env["CommonProgramFiles"] = process.env["CommonProgramFiles"] || "mocked on mac";
 		process.env["CommonProgramFiles(x86)"] = process.env["CommonProgramFiles(x86)"] || "mocked on mac";
 	});