Updated the files.

my-app/node_modules/@babel/preset-env/lib/polyfills/babel-7-plugins.cjs

@@ -0,0 +1,18 @@
+{
+  Object.defineProperties(exports, {
+    pluginCoreJS2: {
+      get: () => require("babel-plugin-polyfill-corejs2").default
+    },
+    pluginRegenerator: {
+      get: () => require("babel-plugin-polyfill-regenerator").default
+    },
+    legacyBabelPolyfillPlugin: {
+      get: () => require("./babel-polyfill.cjs")
+    },
+    removeRegeneratorEntryPlugin: {
+      get: () => require("./regenerator.cjs")
+    }
+  });
+}
+
+//# sourceMappingURL=babel-7-plugins.cjs.map

my-app/node_modules/@babel/preset-env/lib/polyfills/babel-7-plugins.cjs.map

@@ -0,0 +1 @@
+{"version":3,"names":["Object","defineProperties","exports","pluginCoreJS2","get","require","default","pluginRegenerator","legacyBabelPolyfillPlugin","removeRegeneratorEntryPlugin"],"sources":["../../src/polyfills/babel-7-plugins.cjs"],"sourcesContent":["// TODO(Babel 8): Remove this file\n\nif (!process.env.BABEL_8_BREAKING) {\n  Object.defineProperties(exports, {\n    pluginCoreJS2: {\n      get: () => require(\"babel-plugin-polyfill-corejs2\").default,\n    },\n    pluginRegenerator: {\n      get: () => require(\"babel-plugin-polyfill-regenerator\").default,\n    },\n    legacyBabelPolyfillPlugin: { get: () => require(\"./babel-polyfill.cjs\") },\n    removeRegeneratorEntryPlugin: { get: () => require(\"./regenerator.cjs\") },\n  });\n}\n"],"mappings":"AAEmC;EACjCA,MAAM,CAACC,gBAAgB,CAACC,OAAO,EAAE;IAC/BC,aAAa,EAAE;MACbC,GAAG,EAAEA,CAAA,KAAMC,OAAO,CAAC,+BAA+B,CAAC,CAACC;IACtD,CAAC;IACDC,iBAAiB,EAAE;MACjBH,GAAG,EAAEA,CAAA,KAAMC,OAAO,CAAC,mCAAmC,CAAC,CAACC;IAC1D,CAAC;IACDE,yBAAyB,EAAE;MAAEJ,GAAG,EAAEA,CAAA,KAAMC,OAAO,CAAC,sBAAsB;IAAE,CAAC;IACzEI,4BAA4B,EAAE;MAAEL,GAAG,EAAEA,CAAA,KAAMC,OAAO,CAAC,mBAAmB;IAAE;EAC1E,CAAC,CAAC;AACJ"}

my-app/node_modules/@babel/preset-env/lib/polyfills/babel-polyfill.cjs

@@ -0,0 +1,69 @@
+;
+const {
+  getImportSource,
+  getRequireSource,
+  isPolyfillSource
+} = require("./utils.cjs");
+const BABEL_POLYFILL_DEPRECATION = `
+  \`@babel/polyfill\` is deprecated. Please, use required parts of \`core-js\`
+  and \`regenerator-runtime/runtime\` separately`;
+const NO_DIRECT_POLYFILL_IMPORT = `
+  When setting \`useBuiltIns: 'usage'\`, polyfills are automatically imported when needed.
+  Please remove the direct import of \`SPECIFIER\` or use \`useBuiltIns: 'entry'\` instead.`;
+module.exports = function ({
+  template
+}, {
+  regenerator,
+  deprecated,
+  usage
+}) {
+  return {
+    name: "preset-env/replace-babel-polyfill",
+    visitor: {
+      ImportDeclaration(path) {
+        const src = getImportSource(path);
+        if (usage && isPolyfillSource(src)) {
+          console.warn(NO_DIRECT_POLYFILL_IMPORT.replace("SPECIFIER", src));
+          if (!deprecated) path.remove();
+        } else if (src === "@babel/polyfill") {
+          if (deprecated) {
+            console.warn(BABEL_POLYFILL_DEPRECATION);
+          } else if (regenerator) {
+            path.replaceWithMultiple(template.ast`
+              import "core-js";
+              import "regenerator-runtime/runtime.js";
+            `);
+          } else {
+            path.replaceWith(template.ast`
+              import "core-js";
+            `);
+          }
+        }
+      },
+      Program(path) {
+        path.get("body").forEach(bodyPath => {
+          const src = getRequireSource(bodyPath);
+          if (usage && isPolyfillSource(src)) {
+            console.warn(NO_DIRECT_POLYFILL_IMPORT.replace("SPECIFIER", src));
+            if (!deprecated) bodyPath.remove();
+          } else if (src === "@babel/polyfill") {
+            if (deprecated) {
+              console.warn(BABEL_POLYFILL_DEPRECATION);
+            } else if (regenerator) {
+              bodyPath.replaceWithMultiple(template.ast`
+                require("core-js");
+                require("regenerator-runtime/runtime.js");
+              `);
+            } else {
+              bodyPath.replaceWith(template.ast`
+                require("core-js");
+              `);
+            }
+          }
+        });
+      }
+    }
+  };
+};
+
+//# sourceMappingURL=babel-polyfill.cjs.map

my-app/node_modules/@babel/preset-env/lib/polyfills/babel-polyfill.cjs.map

@@ -0,0 +1 @@
+{"version":3,"names":["getImportSource","getRequireSource","isPolyfillSource","require","BABEL_POLYFILL_DEPRECATION","NO_DIRECT_POLYFILL_IMPORT","module","exports","template","regenerator","deprecated","usage","name","visitor","ImportDeclaration","path","src","console","warn","replace","remove","replaceWithMultiple","ast","replaceWith","Program","get","forEach","bodyPath"],"sources":["../../src/polyfills/babel-polyfill.cjs"],"sourcesContent":["// TODO(Babel 8) Remove this file\nif (process.env.BABEL_8_BREAKING) {\n  throw new Error(\n    \"Internal Babel error: This file should only be loaded in Babel 7\",\n  );\n}\n\nconst {\n  getImportSource,\n  getRequireSource,\n  isPolyfillSource,\n} = require(\"./utils.cjs\");\n\nconst BABEL_POLYFILL_DEPRECATION = `\n  \\`@babel/polyfill\\` is deprecated. Please, use required parts of \\`core-js\\`\n  and \\`regenerator-runtime/runtime\\` separately`;\n\nconst NO_DIRECT_POLYFILL_IMPORT = `\n  When setting \\`useBuiltIns: 'usage'\\`, polyfills are automatically imported when needed.\n  Please remove the direct import of \\`SPECIFIER\\` or use \\`useBuiltIns: 'entry'\\` instead.`;\n\nmodule.exports = function ({ template }, { regenerator, deprecated, usage }) {\n  return {\n    name: \"preset-env/replace-babel-polyfill\",\n    visitor: {\n      ImportDeclaration(path) {\n        const src = getImportSource(path);\n        if (usage && isPolyfillSource(src)) {\n          console.warn(NO_DIRECT_POLYFILL_IMPORT.replace(\"SPECIFIER\", src));\n          if (!deprecated) path.remove();\n        } else if (src === \"@babel/polyfill\") {\n          if (deprecated) {\n            console.warn(BABEL_POLYFILL_DEPRECATION);\n          } else if (regenerator) {\n            path.replaceWithMultiple(template.ast`\n              import \"core-js\";\n              import \"regenerator-runtime/runtime.js\";\n            `);\n          } else {\n            path.replaceWith(template.ast`\n              import \"core-js\";\n            `);\n          }\n        }\n      },\n      Program(path) {\n        path.get(\"body\").forEach(bodyPath => {\n          const src = getRequireSource(bodyPath);\n          if (usage && isPolyfillSource(src)) {\n            console.warn(NO_DIRECT_POLYFILL_IMPORT.replace(\"SPECIFIER\", src));\n            if (!deprecated) bodyPath.remove();\n          } else if (src === \"@babel/polyfill\") {\n            if (deprecated) {\n              console.warn(BABEL_POLYFILL_DEPRECATION);\n            } else if (regenerator) {\n              bodyPath.replaceWithMultiple(template.ast`\n                require(\"core-js\");\n                require(\"regenerator-runtime/runtime.js\");\n              `);\n            } else {\n              bodyPath.replaceWith(template.ast`\n                require(\"core-js\");\n              `);\n            }\n          }\n        });\n      },\n    },\n  };\n};\n"],"mappings":";AAOA,MAAM;EACJA,eAAe;EACfC,gBAAgB;EAChBC;AACF,CAAC,GAAGC,OAAO,CAAC,aAAa,CAAC;AAE1B,MAAMC,0BAA0B,GAAI;AACpC;AACA,iDAAiD;AAEjD,MAAMC,yBAAyB,GAAI;AACnC;AACA,4FAA4F;AAE5FC,MAAM,CAACC,OAAO,GAAG,UAAU;EAAEC;AAAS,CAAC,EAAE;EAAEC,WAAW;EAAEC,UAAU;EAAEC;AAAM,CAAC,EAAE;EAC3E,OAAO;IACLC,IAAI,EAAE,mCAAmC;IACzCC,OAAO,EAAE;MACPC,iBAAiBA,CAACC,IAAI,EAAE;QACtB,MAAMC,GAAG,GAAGhB,eAAe,CAACe,IAAI,CAAC;QACjC,IAAIJ,KAAK,IAAIT,gBAAgB,CAACc,GAAG,CAAC,EAAE;UAClCC,OAAO,CAACC,IAAI,CAACb,yBAAyB,CAACc,OAAO,CAAC,WAAW,EAAEH,GAAG,CAAC,CAAC;UACjE,IAAI,CAACN,UAAU,EAAEK,IAAI,CAACK,MAAM,CAAC,CAAC;QAChC,CAAC,MAAM,IAAIJ,GAAG,KAAK,iBAAiB,EAAE;UACpC,IAAIN,UAAU,EAAE;YACdO,OAAO,CAACC,IAAI,CAACd,0BAA0B,CAAC;UAC1C,CAAC,MAAM,IAAIK,WAAW,EAAE;YACtBM,IAAI,CAACM,mBAAmB,CAACb,QAAQ,CAACc,GAAI;AAClD;AACA;AACA,aAAa,CAAC;UACJ,CAAC,MAAM;YACLP,IAAI,CAACQ,WAAW,CAACf,QAAQ,CAACc,GAAI;AAC1C;AACA,aAAa,CAAC;UACJ;QACF;MACF,CAAC;MACDE,OAAOA,CAACT,IAAI,EAAE;QACZA,IAAI,CAACU,GAAG,CAAC,MAAM,CAAC,CAACC,OAAO,CAACC,QAAQ,IAAI;UACnC,MAAMX,GAAG,GAAGf,gBAAgB,CAAC0B,QAAQ,CAAC;UACtC,IAAIhB,KAAK,IAAIT,gBAAgB,CAACc,GAAG,CAAC,EAAE;YAClCC,OAAO,CAACC,IAAI,CAACb,yBAAyB,CAACc,OAAO,CAAC,WAAW,EAAEH,GAAG,CAAC,CAAC;YACjE,IAAI,CAACN,UAAU,EAAEiB,QAAQ,CAACP,MAAM,CAAC,CAAC;UACpC,CAAC,MAAM,IAAIJ,GAAG,KAAK,iBAAiB,EAAE;YACpC,IAAIN,UAAU,EAAE;cACdO,OAAO,CAACC,IAAI,CAACd,0BAA0B,CAAC;YAC1C,CAAC,MAAM,IAAIK,WAAW,EAAE;cACtBkB,QAAQ,CAACN,mBAAmB,CAACb,QAAQ,CAACc,GAAI;AACxD;AACA;AACA,eAAe,CAAC;YACJ,CAAC,MAAM;cACLK,QAAQ,CAACJ,WAAW,CAACf,QAAQ,CAACc,GAAI;AAChD;AACA,eAAe,CAAC;YACJ;UACF;QACF,CAAC,CAAC;MACJ;IACF;EACF,CAAC;AACH,CAAC"}

my-app/node_modules/@babel/preset-env/lib/polyfills/regenerator.cjs

@@ -0,0 +1,44 @@
+;
+const {
+  getImportSource,
+  getRequireSource
+} = require("./utils.cjs");
+function isRegeneratorSource(source) {
+  return source === "regenerator-runtime/runtime" || source === "regenerator-runtime/runtime.js";
+}
+module.exports = function () {
+  const visitor = {
+    ImportDeclaration(path) {
+      if (isRegeneratorSource(getImportSource(path))) {
+        this.regeneratorImportExcluded = true;
+        path.remove();
+      }
+    },
+    Program(path) {
+      path.get("body").forEach(bodyPath => {
+        if (isRegeneratorSource(getRequireSource(bodyPath))) {
+          this.regeneratorImportExcluded = true;
+          bodyPath.remove();
+        }
+      });
+    }
+  };
+  return {
+    name: "preset-env/remove-regenerator",
+    visitor,
+    pre() {
+      this.regeneratorImportExcluded = false;
+    },
+    post() {
+      if (this.opts.debug && this.regeneratorImportExcluded) {
+        let filename = this.file.opts.filename;
+        if (process.env.BABEL_ENV === "test") {
+          filename = filename.replace(/\\/g, "/");
+        }
+        console.log(`\n[${filename}] Based on your targets, regenerator-runtime import excluded.`);
+      }
+    }
+  };
+};
+
+//# sourceMappingURL=regenerator.cjs.map

my-app/node_modules/@babel/preset-env/lib/polyfills/regenerator.cjs.map

@@ -0,0 +1 @@
+{"version":3,"names":["getImportSource","getRequireSource","require","isRegeneratorSource","source","module","exports","visitor","ImportDeclaration","path","regeneratorImportExcluded","remove","Program","get","forEach","bodyPath","name","pre","post","opts","debug","filename","file","process","env","BABEL_ENV","replace","console","log"],"sources":["../../src/polyfills/regenerator.cjs"],"sourcesContent":["// TODO(Babel 8) Remove this file\nif (process.env.BABEL_8_BREAKING) {\n  throw new Error(\n    \"Internal Babel error: This file should only be loaded in Babel 7\",\n  );\n}\n\nconst { getImportSource, getRequireSource } = require(\"./utils.cjs\");\n\nfunction isRegeneratorSource(source) {\n  return (\n    source === \"regenerator-runtime/runtime\" ||\n    source === \"regenerator-runtime/runtime.js\"\n  );\n}\n\nmodule.exports = function () {\n  const visitor = {\n    ImportDeclaration(path) {\n      if (isRegeneratorSource(getImportSource(path))) {\n        this.regeneratorImportExcluded = true;\n        path.remove();\n      }\n    },\n    Program(path) {\n      path.get(\"body\").forEach(bodyPath => {\n        if (isRegeneratorSource(getRequireSource(bodyPath))) {\n          this.regeneratorImportExcluded = true;\n          bodyPath.remove();\n        }\n      });\n    },\n  };\n\n  return {\n    name: \"preset-env/remove-regenerator\",\n    visitor,\n    pre() {\n      this.regeneratorImportExcluded = false;\n    },\n    post() {\n      if (this.opts.debug && this.regeneratorImportExcluded) {\n        let filename = this.file.opts.filename;\n        // normalize filename to generate consistent preset-env test fixtures\n        if (process.env.BABEL_ENV === \"test\") {\n          filename = filename.replace(/\\\\/g, \"/\");\n        }\n        console.log(\n          `\\n[${filename}] Based on your targets, regenerator-runtime import excluded.`,\n        );\n      }\n    },\n  };\n};\n"],"mappings":";AAOA,MAAM;EAAEA,eAAe;EAAEC;AAAiB,CAAC,GAAGC,OAAO,CAAC,aAAa,CAAC;AAEpE,SAASC,mBAAmBA,CAACC,MAAM,EAAE;EACnC,OACEA,MAAM,KAAK,6BAA6B,IACxCA,MAAM,KAAK,gCAAgC;AAE/C;AAEAC,MAAM,CAACC,OAAO,GAAG,YAAY;EAC3B,MAAMC,OAAO,GAAG;IACdC,iBAAiBA,CAACC,IAAI,EAAE;MACtB,IAAIN,mBAAmB,CAACH,eAAe,CAACS,IAAI,CAAC,CAAC,EAAE;QAC9C,IAAI,CAACC,yBAAyB,GAAG,IAAI;QACrCD,IAAI,CAACE,MAAM,CAAC,CAAC;MACf;IACF,CAAC;IACDC,OAAOA,CAACH,IAAI,EAAE;MACZA,IAAI,CAACI,GAAG,CAAC,MAAM,CAAC,CAACC,OAAO,CAACC,QAAQ,IAAI;QACnC,IAAIZ,mBAAmB,CAACF,gBAAgB,CAACc,QAAQ,CAAC,CAAC,EAAE;UACnD,IAAI,CAACL,yBAAyB,GAAG,IAAI;UACrCK,QAAQ,CAACJ,MAAM,CAAC,CAAC;QACnB;MACF,CAAC,CAAC;IACJ;EACF,CAAC;EAED,OAAO;IACLK,IAAI,EAAE,+BAA+B;IACrCT,OAAO;IACPU,GAAGA,CAAA,EAAG;MACJ,IAAI,CAACP,yBAAyB,GAAG,KAAK;IACxC,CAAC;IACDQ,IAAIA,CAAA,EAAG;MACL,IAAI,IAAI,CAACC,IAAI,CAACC,KAAK,IAAI,IAAI,CAACV,yBAAyB,EAAE;QACrD,IAAIW,QAAQ,GAAG,IAAI,CAACC,IAAI,CAACH,IAAI,CAACE,QAAQ;QAEtC,IAAIE,OAAO,CAACC,GAAG,CAACC,SAAS,KAAK,MAAM,EAAE;UACpCJ,QAAQ,GAAGA,QAAQ,CAACK,OAAO,CAAC,KAAK,EAAE,GAAG,CAAC;QACzC;QACAC,OAAO,CAACC,GAAG,CACR,MAAKP,QAAS,+DACjB,CAAC;MACH;IACF;EACF,CAAC;AACH,CAAC"}

my-app/node_modules/@babel/preset-env/lib/polyfills/utils.cjs

@@ -0,0 +1,22 @@
+;
+exports.getImportSource = function ({
+  node
+}) {
+  if (node.specifiers.length === 0) return node.source.value;
+};
+exports.getRequireSource = function ({
+  node
+}) {
+  if (node.type !== "ExpressionStatement") return;
+  const {
+    expression
+  } = node;
+  if (expression.type === "CallExpression" && expression.callee.type === "Identifier" && expression.callee.name === "require" && expression.arguments.length === 1 && expression.arguments[0].type === "StringLiteral") {
+    return expression.arguments[0].value;
+  }
+};
+exports.isPolyfillSource = function (source) {
+  return source === "@babel/polyfill" || source === "core-js";
+};
+
+//# sourceMappingURL=utils.cjs.map

my-app/node_modules/@babel/preset-env/lib/polyfills/utils.cjs.map

@@ -0,0 +1 @@
+{"version":3,"names":["exports","getImportSource","node","specifiers","length","source","value","getRequireSource","type","expression","callee","name","arguments","isPolyfillSource"],"sources":["../../src/polyfills/utils.cjs"],"sourcesContent":["// TODO(Babel 8) Remove this file\nif (process.env.BABEL_8_BREAKING) {\n  throw new Error(\n    \"Internal Babel error: This file should only be loaded in Babel 7\",\n  );\n}\n\nexports.getImportSource = function ({ node }) {\n  if (node.specifiers.length === 0) return node.source.value;\n};\n\nexports.getRequireSource = function ({ node }) {\n  if (node.type !== \"ExpressionStatement\") return;\n  const { expression } = node;\n  if (\n    expression.type === \"CallExpression\" &&\n    expression.callee.type === \"Identifier\" &&\n    expression.callee.name === \"require\" &&\n    expression.arguments.length === 1 &&\n    expression.arguments[0].type === \"StringLiteral\"\n  ) {\n    return expression.arguments[0].value;\n  }\n};\n\nexports.isPolyfillSource = function (source) {\n  return source === \"@babel/polyfill\" || source === \"core-js\";\n};\n"],"mappings":";AAOAA,OAAO,CAACC,eAAe,GAAG,UAAU;EAAEC;AAAK,CAAC,EAAE;EAC5C,IAAIA,IAAI,CAACC,UAAU,CAACC,MAAM,KAAK,CAAC,EAAE,OAAOF,IAAI,CAACG,MAAM,CAACC,KAAK;AAC5D,CAAC;AAEDN,OAAO,CAACO,gBAAgB,GAAG,UAAU;EAAEL;AAAK,CAAC,EAAE;EAC7C,IAAIA,IAAI,CAACM,IAAI,KAAK,qBAAqB,EAAE;EACzC,MAAM;IAAEC;EAAW,CAAC,GAAGP,IAAI;EAC3B,IACEO,UAAU,CAACD,IAAI,KAAK,gBAAgB,IACpCC,UAAU,CAACC,MAAM,CAACF,IAAI,KAAK,YAAY,IACvCC,UAAU,CAACC,MAAM,CAACC,IAAI,KAAK,SAAS,IACpCF,UAAU,CAACG,SAAS,CAACR,MAAM,KAAK,CAAC,IACjCK,UAAU,CAACG,SAAS,CAAC,CAAC,CAAC,CAACJ,IAAI,KAAK,eAAe,EAChD;IACA,OAAOC,UAAU,CAACG,SAAS,CAAC,CAAC,CAAC,CAACN,KAAK;EACtC;AACF,CAAC;AAEDN,OAAO,CAACa,gBAAgB,GAAG,UAAUR,MAAM,EAAE;EAC3C,OAAOA,MAAM,KAAK,iBAAiB,IAAIA,MAAM,KAAK,SAAS;AAC7D,CAAC"}