fix: ensure compatibility with TS 3.7 (#5497)

package.json

@@ -107,7 +107,7 @@
     "terser": "^4.3.9",
     "ts-jest": "^24.1.0",
     "ts-json-schema-generator": "^0.55.0",
-    "typescript": "~3.6.4",
+    "typescript": "~3.7.1-rc",
     "vega-cli": "^5.7.3",
     "vega-datasets": "^1.26.0",
     "vega-embed": "^6.0.0",

src/bin.ts

@@ -1,5 +1,4 @@
 import {isBoolean, isObject} from 'vega-util';
-import {BinParams} from './bin';
 import {
   Channel,
   COLOR,

src/projection.ts

@@ -1,7 +1,5 @@
 import {ProjectionType} from './vega.schema';
 
-export type ProjectionType = ProjectionType;
-
 export interface Projection {
   /**
    * The cartographic projection to use. This value is case-insensitive, for example `"albers"` and `"Albers"` indicate the same projection type. You can find all valid projection types [in the documentation](https://vega.github.io/vega-lite/docs/projection.html#projection-types).

src/spec/facet.ts

@@ -5,7 +5,6 @@ import {Header} from '../header';
 import {EncodingSortField, SortArray, SortOrder} from '../sort';
 import {StandardType} from '../type';
 import {BaseSpec, GenericCompositionLayoutWithColumns, ResolveMixins} from './base';
-import {FacetMapping} from './facet';
 import {GenericLayerSpec, NormalizedLayerSpec} from './layer';
 import {GenericUnitSpec, NormalizedUnitSpec} from './unit';
 

src/spec/repeat.ts

@@ -1,7 +1,6 @@
 import {BaseSpec, GenericCompositionLayoutWithColumns, ResolveMixins} from './base';
 import {GenericSpec} from './index';
 import {GenericLayerSpec, NormalizedLayerSpec} from './layer';
-import {RepeatMapping} from './repeat';
 import {GenericUnitSpec, NormalizedUnitSpec} from './unit';
 
 export interface RepeatMapping {

src/transform.ts

@@ -7,7 +7,6 @@ import {LogicalOperand, normalizeLogicalOperand} from './logical';
 import {normalizePredicate, Predicate} from './predicate';
 import {SortField} from './sort';
 import {TimeUnit} from './timeunit';
-import {JoinAggregateTransform} from './transform';
 
 export interface FilterTransform {
   /**

yarn.lock

@@ -6982,6 +6982,11 @@ typescript@~3.6.4:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.4.tgz#b18752bb3792bc1a0281335f7f6ebf1bbfc5b91d"
   integrity sha512-unoCll1+l+YK4i4F8f22TaNVPRHcD9PA3yCuZ8g5e0qGqlVlJ/8FSateOLLSagn+Yg5+ZwuPkL8LFUc0Jcvksg==
 
+typescript@~3.7.1-rc:
+  version "3.7.1-rc"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.1-rc.tgz#2054b872d67f8dc732e36c1df397f9327f37ada0"
+  integrity sha512-2rMtWppLsaPvmpXsoIAXWDBQVnJMw1ITGGSnidMuayLj9iCmMRT69ncKZw/Mk5rXfJkilApKucWQZxproALoRw==
+
 uglify-js@^3.1.4:
   version "3.6.1"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.6.1.tgz#ae7688c50e1bdcf2f70a0e162410003cf9798311"