chore: Update to Node v10

Signed-off-by: Dale Lane <dale.lane@uk.ibm.com>

custom_typings/unzip2/index.d.ts

@@ -0,0 +1,31 @@
+declare module 'unzip2' {
+
+    import stream = require('stream');
+
+    export function Extract(options: { path: string }): NodeJS.WritableStream;
+    export function Parse(): NodeJS.WritableStream;
+
+    /**
+     * Code example from https://www.npmjs.com/package/unzip with type unzip.Entry added
+     * ```
+     * fs.createReadStream('path/to/archive.zip')
+     *  .pipe(unzip.Parse())
+     *  .on('entry', function (entry: unzip.Entry) {
+     *    var fileName = entry.path;
+     *    var type = entry.type; // 'Directory' or 'File'
+     *    var size = entry.size;
+     *    if (fileName === "this IS the file I'm looking for") {
+     *      entry.pipe(fs.createWriteStream('output/path'));
+     *    } else {
+     *      entry.autodrain();
+     *    }
+     *  });
+     * ```
+     */
+    export interface Entry extends stream.PassThrough {
+        path: string;
+        type: 'Directory' | 'File';
+        size: number;
+        autodrain: () => void;
+    }
+}