1 files changed, 172 insertions, 0 deletions
diff --git a/node_modules/@babel/plugin-bugfix-v8-static-class-fields-redefine-readonly/lib/index.js b/node_modules/@babel/plugin-bugfix-v8-static-class-fields-redefine-readonly/lib/index.js
new file mode 100644
index 00000000..424b87f8
--- /dev/null
+++ b/node_modules/@babel/plugin-bugfix-v8-static-class-fields-redefine-readonly/lib/index.js
@@ -0,0 +1,172 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var core = require('@babel/core');
+var helperPluginUtils = require('@babel/helper-plugin-utils');
+var helperEnvironmentVisitor = require('@babel/helper-environment-visitor');
+
+function isNameOrLength(key) {
+  if (core.types.isIdentifier(key)) {
+    return key.name === "name" || key.name === "length";
+  }
+  if (core.types.isStringLiteral(key)) {
+    return key.value === "name" || key.value === "length";
+  }
+  return false;
+}
+function isStaticFieldWithValue(node) {
+  return (core.types.isClassProperty(node) || core.types.isClassPrivateProperty(node)) && node.static && !!node.value;
+}
+const hasReferenceVisitor = {
+  ReferencedIdentifier(path, state) {
+    if (path.node.name === state.name) {
+      state.ref();
+      path.stop();
+    }
+  },
+  Scope(path, {
+    name
+  }) {
+    if (path.scope.hasOwnBinding(name)) {
+      path.skip();
+    }
+  }
+};
+function isReferenceOrThis(node, name) {
+  return core.types.isThisExpression(node) || name && core.types.isIdentifier(node, {
+    name
+  });
+}
+const hasReferenceOrThisVisitor = {
+  "ThisExpression|ReferencedIdentifier"(path, state) {
+    if (isReferenceOrThis(path.node, state.name)) {
+      state.ref();
+      path.stop();
+    }
+  },
+  FunctionParent(path, state) {
+    if (path.isArrowFunctionExpression()) return;
+    if (state.name && !path.scope.hasOwnBinding(state.name)) {
+      path.traverse(hasReferenceVisitor, state);
+    }
+    path.skip();
+    if (path.isMethod()) {
+      helperEnvironmentVisitor.requeueComputedKeyAndDecorators(path);
+    }
+  }
+};
+function getPotentiallyBuggyFieldsIndexes(path) {
+  var _path$node$id;
+  const buggyPublicStaticFieldsIndexes = [];
+  let classReferenced = false;
+  const className = (_path$node$id = path.node.id) == null ? void 0 : _path$node$id.name;
+  const hasReferenceState = {
+    name: className,
+    ref: () => classReferenced = true
+  };
+  if (className) {
+    for (const el of path.get("body.body")) {
+      if (el.node.computed) {
+        el.get("key").traverse(hasReferenceVisitor, hasReferenceState);
+        if (classReferenced) break;
+      }
+    }
+  }
+  let nextPotentiallyBuggy = false;
+  const {
+    body
+  } = path.node.body;
+  for (let i = 0; i < body.length; i++) {
+    const node = body[i];
+    if (!nextPotentiallyBuggy) {
+      if (core.types.isStaticBlock(node)) {
+        classReferenced = true;
+        nextPotentiallyBuggy = true;
+      } else if (isStaticFieldWithValue(node)) {
+        if (!classReferenced) {
+          if (isReferenceOrThis(node.value, className)) {
+            classReferenced = true;
+          } else {
+            path.get(`body.body.${i}.value`).traverse(hasReferenceOrThisVisitor, hasReferenceState);
+          }
+        }
+        if (classReferenced) {
+          nextPotentiallyBuggy = !path.scope.isPure(node.value);
+        }
+      }
+    }
+    if (core.types.isClassProperty(node, {
+      static: true
+    }) && (nextPotentiallyBuggy || node.computed || isNameOrLength(node.key))) {
+      buggyPublicStaticFieldsIndexes.push(i);
+    }
+  }
+  return buggyPublicStaticFieldsIndexes;
+}
+function getNameOrLengthStaticFieldsIndexes(path) {
+  const indexes = [];
+  const {
+    body
+  } = path.node.body;
+  for (let i = 0; i < body.length; i++) {
+    const node = body[i];
+    if (core.types.isClassProperty(node, {
+      static: true,
+      computed: false
+    }) && isNameOrLength(node.key)) {
+      indexes.push(i);
+    }
+  }
+  return indexes;
+}
+function toRanges(nums) {
+  const ranges = [];
+  if (nums.length === 0) return ranges;
+  let start = nums[0];
+  let end = start + 1;
+  for (let i = 1; i < nums.length; i++) {
+    if (nums[i] <= nums[i - 1]) {
+      throw new Error("Internal Babel error: nums must be in ascending order");
+    }
+    if (nums[i] === end) {
+      end++;
+    } else {
+      ranges.push([start, end]);
+      start = nums[i];
+      end = start + 1;
+    }
+  }
+  ranges.push([start, end]);
+  return ranges;
+}
+
+function buildFieldsReplacement(fields, scope, file) {
+  return core.types.staticBlock(fields.map(field => {
+    const key = field.computed || !core.types.isIdentifier(field.key) ? field.key : core.types.stringLiteral(field.key.name);
+    return core.types.expressionStatement(core.types.callExpression(file.addHelper("defineProperty"), [core.types.thisExpression(), key, field.value || scope.buildUndefinedNode()]));
+  }));
+}
+var index = helperPluginUtils.declare(api => {
+  api.assertVersion(7);
+  const setPublicClassFields = api.assumption("setPublicClassFields");
+  return {
+    name: "bugfix-v8-static-class-fields-redefine-readonly",
+    visitor: {
+      Class(path) {
+        const ranges = toRanges(setPublicClassFields ? getNameOrLengthStaticFieldsIndexes(path) : getPotentiallyBuggyFieldsIndexes(path));
+        for (let i = ranges.length - 1; i >= 0; i--) {
+          const [start, end] = ranges[i];
+          const startPath = path.get("body.body")[start];
+          startPath.replaceWith(buildFieldsReplacement(path.node.body.body.slice(start, end), path.scope, this.file));
+          for (let j = end - 1; j > start; j--) {
+            path.get("body.body")[j].remove();
+          }
+        }
+      }
+    }
+  };
+});
+
+exports.default = index;
+//# sourceMappingURL=index.js.map