diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000000..55712c19f1
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "typescript.tsdk": "node_modules/typescript/lib"
+}
\ No newline at end of file
diff --git a/babel.config.js b/babel.config.js
index 1375b8ad63..01953ccc2e 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -22,6 +22,7 @@ module.exports = (api) => {
       '@babel/preset-typescript',
     ],
     plugins: [
+      '@babel/plugin-proposal-optional-chaining',
       [
         '@babel/plugin-proposal-decorators',
         {
diff --git a/package.json b/package.json
index 9fbc63461e..13ad39938c 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "devDependencies": {
     "@babel/cli": "^7.5.5",
     "@babel/core": "^7.5.5",
+    "@babel/plugin-proposal-optional-chaining": "^7.6.0",
     "@babel/preset-env": "^7.5.5",
     "@babel/preset-react": "^7.0.0",
     "@babel/preset-typescript": "^7.3.3",
@@ -49,7 +50,7 @@
     "npm-run-all": "^4.1.5",
     "postcss": "^7.0.18",
     "postcss-plugin": "^1.0.0",
-    "prettier": "^1.14.2",
+    "prettier": "^1.18.2",
     "raw-loader": "^1.0.0",
     "react": "^16.8.6",
     "react-docgen-typescript-loader": "^3.1.0",
@@ -68,7 +69,7 @@
     "tslint-config-prettier": "^1.15.0",
     "tslint-plugin-prettier": "^1.3.0",
     "tslint-react": "^3.6.0",
-    "typescript": "^3.6.2",
+    "typescript": "^3.7.0-beta",
     "webpack": "^4.17.1",
     "webpack-cli": "^3.1.0",
     "webpack-dev-server": "^3.1.7",
diff --git a/packages/core/src/services/layer/StyleAttribute.ts b/packages/core/src/services/layer/StyleAttribute.ts
index 9ffba518ac..993b6cfc76 100644
--- a/packages/core/src/services/layer/StyleAttribute.ts
+++ b/packages/core/src/services/layer/StyleAttribute.ts
@@ -53,9 +53,9 @@ export default class StyleAttribute implements IStyleAttribute {
     /**
      * 当用户设置的 callback 返回 null 时, 应该返回默认 callback 中的值
      */
-    if (this!.scale!.callback) {
+    if (this.scale?.callback) {
       // 使用用户返回的值处理
-      const ret = this!.scale!.callback(params);
+      const ret = this.scale?.callback(params);
       if (!isNil(ret)) {
         return [ret];
       }
@@ -68,10 +68,10 @@ export default class StyleAttribute implements IStyleAttribute {
   private defaultCallback = (params: unknown[]): unknown[] => {
     // 没有 params 的情况，是指没有指定 fields，直接返回配置的 values 常量
     if (params.length === 0) {
-      return this!.scale!.values;
+      return this.scale?.values || [];
     }
     return params.map((param, idx) => {
-      const scaleFunc = this.scale!.scalers![idx].func;
+      const scaleFunc = this.scale?.scalers![idx].func;
       // @ts-ignore
       const value = scaleFunc(param);
       return value;
diff --git a/packages/core/src/services/renderer/passes/PixelPickingPass.ts b/packages/core/src/services/renderer/passes/PixelPickingPass.ts
index b95f2da9d1..9ce74de6f2 100644
--- a/packages/core/src/services/renderer/passes/PixelPickingPass.ts
+++ b/packages/core/src/services/renderer/passes/PixelPickingPass.ts
@@ -148,7 +148,7 @@ export default class PixelPickingPass implements IPass {
       ) {
         this.logger.info('picked');
         const pickedFeatureIdx = decodePickingColor(pickedColors);
-        const rawFeature = this.layer.getSource()!.data!.dataArray[
+        const rawFeature = this.layer.getSource()?.data?.dataArray[
           pickedFeatureIdx
         ];
 
diff --git a/packages/layers/src/core/BaseLayer.ts b/packages/layers/src/core/BaseLayer.ts
index 2aecff28ab..938c228c8c 100644
--- a/packages/layers/src/core/BaseLayer.ts
+++ b/packages/layers/src/core/BaseLayer.ts
@@ -213,7 +213,7 @@ export default class BaseLayer<ChildLayerStyleOptions = {}> implements ILayer {
     };
     return this;
   }
-  public style(options: unknown): ILayer {
+  public style(options: object): ILayer {
     // @ts-ignore
     this.styleOptions = {
       ...this.styleOptions,
diff --git a/packages/layers/src/plugins/DataMappingPlugin.ts b/packages/layers/src/plugins/DataMappingPlugin.ts
index 4a2ce7f1b4..886751e6bd 100644
--- a/packages/layers/src/plugins/DataMappingPlugin.ts
+++ b/packages/layers/src/plugins/DataMappingPlugin.ts
@@ -84,7 +84,7 @@ export default class DataMappingPlugin implements ILayerPlugin {
       return [];
     }
 
-    const scalers = attribute!.scale!.scalers || [];
+    const scalers = attribute?.scale?.scalers || [];
     const params: unknown[] = [];
 
     scalers.forEach(({ field }) => {
diff --git a/packages/layers/src/plugins/FeatureScalePlugin.ts b/packages/layers/src/plugins/FeatureScalePlugin.ts
index 8bd47366c1..65924b533d 100644
--- a/packages/layers/src/plugins/FeatureScalePlugin.ts
+++ b/packages/layers/src/plugins/FeatureScalePlugin.ts
@@ -71,8 +71,8 @@ export default class FeatureScalePlugin implements ILayerPlugin {
     this.scaleCache = {};
     attributes.forEach((attribute) => {
       if (attribute.scale) {
-        attribute!.scale!.scalers = this.parseFields(
-          attribute!.scale!.field || '',
+        attribute.scale.scalers = this.parseFields(
+          attribute.scale.field || '',
         ).map((field: string) => ({
           field,
           func: this.getOrCreateScale(field, attribute, dataArray),
@@ -93,7 +93,7 @@ export default class FeatureScalePlugin implements ILayerPlugin {
     this.scaleCache[field] = this.createScale(field, dataArray);
     (this.scaleCache[field] as {
       range: (c: unknown[]) => void;
-    }).range(attribute!.scale!.values);
+    }).range(attribute?.scale?.values || []);
     return this.scaleCache[field];
   }
 
@@ -114,7 +114,7 @@ export default class FeatureScalePlugin implements ILayerPlugin {
 
   private createScale(field: string, data?: IParseDataItem[]): unknown {
     // 首先查找全局默认配置例如 color
-    const scaleOption: IScale = this.configService.getConfig()!.scales![field];
+    const scaleOption: IScale | undefined = this.configService.getConfig()?.scales?.[field];
 
     if (!data || !data.length) {
       // 数据为空
@@ -122,7 +122,7 @@ export default class FeatureScalePlugin implements ILayerPlugin {
         ? this.createDefaultScale(scaleOption)
         : d3.scaleOrdinal([field]);
     }
-    const firstValue = data!.find((d) => !isNil(d[field]))![field];
+    const firstValue = data.find((d) => !isNil(d[field]))?.[field];
     // 常量 Scale
     if (isNumber(field) || (isNil(firstValue) && !scaleOption)) {
       return d3.scaleOrdinal([field]);
@@ -152,7 +152,7 @@ export default class FeatureScalePlugin implements ILayerPlugin {
     const cfg: IScale = {
       type,
     };
-    const values = data!.map((item) => item[field]);
+    const values = data?.map((item) => item[field]) || [];
     // 默认类型为 Quantile Scales https://github.com/d3/d3-scale#quantile-scales
     if (type !== ScaleTypes.CAT && type !== ScaleTypes.QUANTILE) {
       cfg.domain = extent(values);
diff --git a/packages/maps/src/mapbox/index.ts b/packages/maps/src/mapbox/index.ts
index 6e0b4f0a10..2ce6f0d59c 100644
--- a/packages/maps/src/mapbox/index.ts
+++ b/packages/maps/src/mapbox/index.ts
@@ -29,8 +29,6 @@ mapboxgl.accessToken =
   'pk.eyJ1IjoieGlhb2l2ZXIiLCJhIjoiY2pxcmc5OGNkMDY3cjQzbG42cXk5NTl3YiJ9.hUC5Chlqzzh0FFd_aEc-uQ';
 const LNGLAT_OFFSET_ZOOM_THRESHOLD = 12;
 
-let counter = 1;
-
 /**
  * AMapService
  */
@@ -166,7 +164,6 @@ export default class MapboxService implements IMapService {
   public async init(mapConfig: IMapConfig): Promise<void> {
     const { id, attributionControl = false, ...rest } = mapConfig;
     this.$mapContainer = document.getElementById(id);
-    this.$mapContainer!.classList.add(`${counter++}`);
 
     this.viewport = new Viewport();
 
diff --git a/yarn.lock b/yarn.lock
index f394d1ab61..aba3055899 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -313,6 +313,14 @@
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-syntax-optional-catch-binding" "^7.2.0"
 
+"@babel/plugin-proposal-optional-chaining@^7.6.0":
+  version "7.6.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.6.0.tgz#e9bf1f9b9ba10c77c033082da75f068389041af8"
+  integrity sha512-kj4gkZ6qUggkprRq3Uh5KP8XnE1MdIO0J7MhdDX8+rAbB6dJ2UrensGIS+0NPZAaaJ1Vr0PN6oLUgXMU1uMcSg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-optional-chaining" "^7.2.0"
+
 "@babel/plugin-proposal-unicode-property-regex@^7.4.4":
   version "7.4.4"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.4.4.tgz#501ffd9826c0b91da22690720722ac7cb1ca9c78"
@@ -378,6 +386,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
+"@babel/plugin-syntax-optional-chaining@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-optional-chaining/-/plugin-syntax-optional-chaining-7.2.0.tgz#a59d6ae8c167e7608eaa443fda9fa8fa6bf21dff"
+  integrity sha512-HtGCtvp5Uq/jH/WNUPkK6b7rufnCPLLlDAFN7cmACoIjaOOiXxUt3SswU5loHqrhtqTsa/WoLQ1OQ1AGuZqaWA==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
 "@babel/plugin-syntax-typescript@^7.2.0", "@babel/plugin-syntax-typescript@^7.3.3":
   version "7.3.3"
   resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.3.3.tgz#a7cc3f66119a9f7ebe2de5383cce193473d65991"
@@ -11815,7 +11830,7 @@ prepend-http@^1.0.0:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
-prettier@^1.14.2, prettier@^1.16.4:
+prettier@^1.16.4, prettier@^1.18.2:
   version "1.18.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.2.tgz#6823e7c5900017b4bd3acf46fe9ac4b4d7bda9ea"
   integrity sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==
@@ -14755,10 +14770,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.6.2:
-  version "3.6.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.2.tgz#105b0f1934119dde543ac8eb71af3a91009efe54"
-  integrity sha512-lmQ4L+J6mnu3xweP8+rOrUwzmN+MRAj7TgtJtDaXE5PMyX2kCrklhg3rvOsOIfNeAWMQWO2F1GPc1kMD2vLAfw==
+typescript@^3.7.0-beta:
+  version "3.7.0-beta"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.0-beta.tgz#4ad556e0eee14b90ecc39261001690e16e5eeba9"
+  integrity sha512-4jyCX+IQamrPJxgkABPq9xf+hUN+GWHVxoj+oey1TadCPa4snQl1RKwUba+1dyzYCamwlCxKvZQ3TjyWLhMGBA==
 
 ua-parser-js@^0.7.18:
   version "0.7.20"