(core) Faster builds all around.

Summary:
Building:
- Builds no longer wait for tsc for either client, server, or test targets. All use esbuild which is very fast.
- Build still runs tsc, but only to report errors. This may be turned off with `SKIP_TSC=1` env var.
- Grist-core continues to build using tsc.
- Esbuild requires ES6 module semantics. Typescript's esModuleInterop is turned
  on, so that tsc accepts and enforces correct usage.
- Client-side code is watched and bundled by webpack as before (using esbuild-loader)

Code changes:
- Imports must now follow ES6 semantics: `import * as X from ...` produces a
  module object; to import functions or class instances, use `import X from ...`.
- Everything is now built with isolatedModules flag. Some exports were updated for it.

Packages:
- Upgraded browserify dependency, and related packages (used for the distribution-building step).
- Building the distribution now uses esbuild's minification. babel-minify is no longer used.

Test Plan: Should have no behavior changes, existing tests should pass, and docker image should build too.

Reviewers: georgegevoian

Reviewed By: georgegevoian

Subscribers: alexmojaki

Differential Revision: https://phab.getgrist.com/D3506

app/client/models/ClientColumnGetters.ts

@@ -1,4 +1,4 @@
-import * as DataTableModel from 'app/client/models/DataTableModel';
+import DataTableModel from 'app/client/models/DataTableModel';
 import { ColumnGetter, ColumnGetters } from 'app/common/ColumnGetters';
 import * as gristTypes from 'app/common/gristTypes';
 import { choiceGetter } from 'app/common/SortFunc';

app/client/models/DataRowModel.ts

@@ -1,7 +1,7 @@
 import { KoArray } from 'app/client/lib/koArray';
 import * as koUtil from 'app/client/lib/koUtil';
-import * as BaseRowModel from 'app/client/models/BaseRowModel';
-import * as DataTableModel from 'app/client/models/DataTableModel';
+import BaseRowModel from 'app/client/models/BaseRowModel';
+import DataTableModel from 'app/client/models/DataTableModel';
 import { IRowModel } from 'app/client/models/DocModel';
 import { ValidationRec } from 'app/client/models/entities/ValidationRec';
 import * as modelUtil from 'app/client/models/modelUtil';

app/client/models/DataTableModelWithDiff.ts

@@ -1,5 +1,5 @@
-import * as BaseRowModel from "app/client/models/BaseRowModel";
-import * as DataTableModel from 'app/client/models/DataTableModel';
+import BaseRowModel from "app/client/models/BaseRowModel";
+import DataTableModel from 'app/client/models/DataTableModel';
 import { DocModel } from 'app/client/models/DocModel';
 import { TableRec } from 'app/client/models/entities/TableRec';
 import { TableQuerySets } from 'app/client/models/QuerySet';

app/client/models/DocModel.ts

@@ -16,11 +16,11 @@ import * as ko from 'knockout';
 
 import * as koArray from 'app/client/lib/koArray';
 import * as koUtil from 'app/client/lib/koUtil';
-import * as DataTableModel from 'app/client/models/DataTableModel';
+import DataTableModel from 'app/client/models/DataTableModel';
 import {DocData} from 'app/client/models/DocData';
 import {urlState} from 'app/client/models/gristUrlState';
-import * as MetaRowModel from 'app/client/models/MetaRowModel';
-import * as MetaTableModel from 'app/client/models/MetaTableModel';
+import MetaRowModel from 'app/client/models/MetaRowModel';
+import MetaTableModel from 'app/client/models/MetaTableModel';
 import * as rowset from 'app/client/models/rowset';
 import {isHiddenTable, isRawTable} from 'app/common/isHiddenTable';
 import {schema, SchemaTypes} from 'app/common/schema';

app/client/models/HomeModel.ts

@@ -13,7 +13,7 @@ import {SortPref, UserOrgPrefs, ViewPref} from 'app/common/Prefs';
 import * as roles from 'app/common/roles';
 import {Document, Organization, Workspace} from 'app/common/UserAPI';
 import {bundleChanges, Computed, Disposable, Observable, subscribe} from 'grainjs';
-import * as moment from 'moment';
+import moment from 'moment';
 import flatten = require('lodash/flatten');
 import sortBy = require('lodash/sortBy');
 

app/client/models/QuerySet.ts

@@ -26,7 +26,7 @@
  * TODO: client-side should show "..." or "50000 more rows not shown" in that case.
  * TODO: Reference columns don't work properly because always use a displayCol which relies on formulas
  */
-import * as DataTableModel from 'app/client/models/DataTableModel';
+import DataTableModel from 'app/client/models/DataTableModel';
 import {DocModel} from 'app/client/models/DocModel';
 import {BaseFilteredRowSource, RowId, RowList, RowSource} from 'app/client/models/rowset';
 import {TableData} from 'app/client/models/TableData';

app/client/models/entities/TableRec.ts

@@ -4,7 +4,7 @@ import {ColumnRec, ValidationRec, ViewRec} from 'app/client/models/DocModel';
 import * as modelUtil from 'app/client/models/modelUtil';
 import {MANUALSORT} from 'app/common/gristTypes';
 import * as ko from 'knockout';
-import * as randomcolor from 'randomcolor';
+import randomcolor from 'randomcolor';
 
 // Represents a user-defined table.
 export interface TableRec extends IRowModel<"_grist_Tables"> {

app/client/models/entities/ViewSectionRec.ts

@@ -1,4 +1,4 @@
-import * as BaseView from 'app/client/components/BaseView';
+import BaseView from 'app/client/components/BaseView';
 import {CursorPos} from 'app/client/components/Cursor';
 import {FilterColValues, LinkingState} from 'app/client/components/LinkingState';
 import {KoArray} from 'app/client/lib/koArray';