[lovefield] Replace Object with object (#28757)

This is my first contribution, so I'm not sure if I missed something. I plan to make a more detailed edit in the future that replaces object with true generics, but it's not immediately obvious how to do that.

Please fill in this template.

- [x] Use a meaningful title for the pull request. Include the name of the package modified.
- [x] Test the change in your own code. (Compile and run.)
- [x] Add or edit tests to reflect the change. (Run with `npm test`.)
- [x] Follow the advice from the [readme](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/README.md#make-a-pull-request).
- [x] Avoid [common mistakes](https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/README.md#common-mistakes).
- [x] Run `npm run lint package-name` (or `tsc` if no `tslint.json` is present).

Select one of these and delete the others:

If changing an existing definition:
- [x] Provide a URL to documentation or source code which provides context for the suggested changes: https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/README.md#common-mistakes
- [x] Increase the version number in the header if appropriate.
- [x] If you are making substantial changes, consider adding a `tslint.json` containing `{ "extends": "dtslint/dt.json" }`.

types/lovefield/index.d.ts

@@ -1,7 +1,9 @@
 // Type definitions for Lovefield 2.1
 // Project: http://google.github.io/lovefield/
 // Definitions by: freshp86 <https://github.com/freshp86>
+//                 zackzeno <https://github.com/zackzeno>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
 
 declare namespace lf {
   enum Order { ASC, DESC }
@@ -59,10 +61,10 @@ declare namespace lf {
   }
 
   interface Transaction {
-    attach(query: query.Builder): Promise<Object[]>;
+    attach(query: query.Builder): Promise<object[]>;
     begin(scope: schema.Table[]): Promise<void>;
     commit(): Promise<void>;
-    exec(queries: query.Builder[]): Promise<Object[][]>;
+    exec(queries: query.Builder[]): Promise<object[][]>;
     rollback(): Promise<void>;
     stats(): TransactionStats;
   }
@@ -73,9 +75,9 @@ declare namespace lf {
     close(): void;
     createTransaction(type?: TransactionType): Transaction;
     delete(): query.Delete;
-    export(): Promise<Object>;
+    export(): Promise<object>;
     getSchema(): schema.Database;
-    import(data: Object): Promise<void>;
+    import(data: object): Promise<void>;
     insertOrReplace(): query.Insert;
     insert(): query.Insert;
     observe(query: query.Select, callback: Function): void;
@@ -87,7 +89,7 @@ declare namespace lf {
   namespace query {
     interface Builder {
       bind(...values: any[]): Builder;
-      exec(): Promise<Object[]>;
+      exec(): Promise<object[]>;
       explain(): string;
       toSql(): string;
     }
@@ -131,9 +133,9 @@ declare namespace lf {
       renameTableColumn(
           tableName: string, oldColumnName: string,
           newColumnName: string): Promise<void>;
-      createRow(payload: Object): Row;
+      createRow(payload: object): Row;
       getVersion(): number;
-      dump(): Object[];
+      dump(): object[];
     }
   }  // module raw
 
@@ -166,7 +168,7 @@ declare namespace lf {
 
     interface ITable {
       as(name: string): Table;
-      createRow(value: Object): Row;
+      createRow(value: object): Row;
       getName(): string;
     }
 

types/lovefield/lovefield-tests.ts

@@ -1,4 +1,10 @@
 import lf = require("lovefield");
+export interface IRow {
+    id: number;
+    description: string;
+    deadline: Date;
+    done: boolean;
+}
 function main(): void {
   const schemaBuilder: lf.schema.Builder = lf.schema.create('todo', 1);
 
@@ -28,11 +34,11 @@ function main(): void {
     });
     return db.insertOrReplace().into(itemSchema).values([row]).exec();
   }).then(() => {
-    const column = itemSchema['done'];
-    return todoDb.select().from(itemSchema).where(column.eq(false)).exec();
+    const column = itemSchema.done;
+    return todoDb.select().from(itemSchema).where(column.eq(false)).exec() as Promise<IRow[]>;
 }).then((results) => {
     results.forEach((row) => {
-      document.body.textContent = `${(row as any).description} before ${(row as any).deadline}`;
+      document.body.textContent = `${row.description} before ${row.deadline}`;
     });
 
     return todoDb.delete().from(itemSchema);