Update esbuild config (microsoft#144)

Description of changes

Adds mainFields option to extensionConfig object in all extensions using esbuild

Author: hawkticehurst

default/component-gallery/esbuild.js

@@ -16,6 +16,7 @@ const baseConfig = {
 const extensionConfig = {
   ...baseConfig,
   platform: "node",
+  mainFields: ["module", "main"],
   format: "cjs",
   entryPoints: ["./src/extension.ts"],
   outfile: "./out/extension.js",

default/hello-world/esbuild.js

@@ -15,6 +15,7 @@ const baseConfig = {
 const extensionConfig = {
   ...baseConfig,
   platform: "node",
+  mainFields: ["module", "main"],
   format: "cjs",
   entryPoints: ["./src/extension.ts"],
   outfile: "./out/extension.js",

default/notepad/esbuild.js

@@ -16,6 +16,7 @@ const baseConfig = {
 const extensionConfig = {
   ...baseConfig,
   platform: "node",
+  mainFields: ["module", "main"],
   format: "cjs",
   entryPoints: ["./src/extension.ts"],
   outfile: "./out/extension.js",

default/weather-webview/esbuild.js

@@ -16,6 +16,7 @@ const baseConfig = {
 const extensionConfig = {
   ...baseConfig,
   platform: "node",
+  mainFields: ["module", "main"],
   format: "cjs",
   entryPoints: ["./src/extension.ts"],
   outfile: "./out/extension.js",