init

node_modules/@babel/plugin-transform-class-static-block/lib/index.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var _helperPluginUtils = require("@babel/helper-plugin-utils");
+var _helperCreateClassFeaturesPlugin = require("@babel/helper-create-class-features-plugin");
+function generateUid(scope, denyList) {
+  const name = "";
+  let uid;
+  let i = 1;
+  do {
+    uid = `_${name}`;
+    if (i > 1) uid += i;
+    i++;
+  } while (denyList.has(uid));
+  return uid;
+}
+function mapLast(arr, fn) {
+  if (arr.length === 0) return arr;
+  return [...arr.slice(0, -1), fn(arr[arr.length - 1])];
+}
+var _default = exports.default = (0, _helperPluginUtils.declare)(({
+  types: t,
+  template,
+  traverse,
+  assertVersion
+}) => {
+  assertVersion("^7.12.0 || >8.0.0-alpha <8.0.0-beta");
+  const rawNamedEvaluationVisitor = (0, _helperCreateClassFeaturesPlugin.buildNamedEvaluationVisitor)(path => {
+    if (!path.isClassExpression()) return false;
+    for (let i = path.node.body.body.length - 1; i >= 0; i--) {
+      const el = path.node.body.body[i];
+      if (t.isStaticBlock(el)) {
+        return true;
+      }
+      if ((t.isClassProperty(el) || t.isClassPrivateProperty(el)) && el.static) {
+        break;
+      }
+    }
+    return false;
+  }, (classPath, state, name) => {
+    const nameNode = typeof name === "string" ? t.stringLiteral(name) : name;
+    classPath.get("body").unshiftContainer("body", t.staticBlock([template.statement.ast`
+            ${state.addHelper("setFunctionName")}(this, ${nameNode});
+          `]));
+  });
+  if (!t.classAccessorProperty) {
+    delete rawNamedEvaluationVisitor.ClassAccessorProperty;
+  }
+  const namedEvaluationVisitor = traverse.visitors.explode(rawNamedEvaluationVisitor);
+  const maybeSequenceExpression = expressions => {
+    if (expressions.length === 1) {
+      return expressions[0];
+    } else {
+      return t.sequenceExpression(expressions);
+    }
+  };
+  const blocksToExpressions = blocks => blocks.map(block => {
+    const {
+      body
+    } = block;
+    if (body.length === 1 && t.isExpressionStatement(body[0])) {
+      return t.inheritsComments(t.inheritsComments(body[0].expression, body[0]), block);
+    }
+    return t.inheritsComments(template.expression.ast`(() => { ${body} })()`, block);
+  });
+  const prependToInitializer = (prop, expressions) => {
+    prop.value = prop.value ? t.sequenceExpression([...expressions, prop.value]) : maybeSequenceExpression(mapLast(expressions, expr => t.unaryExpression("void", expr)));
+  };
+  return {
+    name: "transform-class-static-block",
+    manipulateOptions: (_, parser) => parser.plugins.push("classStaticBlock"),
+    pre() {
+      (0, _helperCreateClassFeaturesPlugin.enableFeature)(this.file, _helperCreateClassFeaturesPlugin.FEATURES.staticBlocks, false);
+    },
+    visitor: {
+      ClassBody(classBody) {
+        const {
+          scope
+        } = classBody;
+        let parentPath = classBody.parentPath;
+        if (parentPath.isClassExpression() && !parentPath.node.id) {
+          do ({
+            parentPath
+          } = parentPath); while (parentPath && !namedEvaluationVisitor[parentPath.type] && !parentPath.isStatement());
+          if (parentPath) {
+            var _namedEvaluationVisit;
+            (_namedEvaluationVisit = namedEvaluationVisitor[parentPath.type]) == null || _namedEvaluationVisit.enter.forEach(f => f.call(this, parentPath, this));
+          }
+        }
+        const pendingStaticBlocks = [];
+        let lastStaticProp = null;
+        for (const path of classBody.get("body")) {
+          if (path.isStaticBlock()) {
+            pendingStaticBlocks.push(path.node);
+            path.remove();
+          } else if (path.isClassProperty({
+            static: true
+          }) || path.isClassPrivateProperty({
+            static: true
+          })) {
+            lastStaticProp = path;
+            if (pendingStaticBlocks.length > 0) {
+              prependToInitializer(path.node, blocksToExpressions(pendingStaticBlocks));
+              pendingStaticBlocks.length = 0;
+            }
+          }
+        }
+        if (pendingStaticBlocks.length > 0) {
+          const tmp = scope.generateDeclaredUidIdentifier("staticBlock");
+          let arrowBody;
+          const needsCompletionValue = classBody.parentPath.isExpression();
+          if (pendingStaticBlocks.length > 1 || pendingStaticBlocks[0].body.length === 1 && t.isExpressionStatement(pendingStaticBlocks[0].body[0])) {
+            const expressions = blocksToExpressions(pendingStaticBlocks);
+            if (needsCompletionValue) {
+              expressions.push(t.thisExpression());
+            }
+            arrowBody = maybeSequenceExpression(expressions);
+          } else {
+            arrowBody = t.blockStatement(pendingStaticBlocks[0].body);
+            if (needsCompletionValue) {
+              arrowBody.body.push(t.returnStatement(t.thisExpression()));
+            }
+          }
+          const init = template.expression.ast`${tmp} = () => ${arrowBody}`;
+          if (lastStaticProp) {
+            prependToInitializer(lastStaticProp.node, [init]);
+          } else {
+            const privateNames = new Set();
+            for (const path of classBody.get("body")) {
+              if (path.isPrivate()) {
+                privateNames.add(path.get("key.id").node.name);
+              }
+            }
+            const staticBlockPrivateId = generateUid(scope, privateNames);
+            const staticBlockRef = t.privateName(t.identifier(staticBlockPrivateId));
+            classBody.pushContainer("body", [t.classPrivateProperty(staticBlockRef, init, [], true)]);
+          }
+          const staticBlockClosureCall = t.callExpression(t.cloneNode(tmp), []);
+          if (classBody.parentPath.isClassExpression()) {
+            classBody.parentPath.replaceWith(t.sequenceExpression([classBody.parent, staticBlockClosureCall]));
+          } else {
+            classBody.parentPath.insertAfter(t.expressionStatement(staticBlockClosureCall));
+          }
+        }
+      }
+    }
+  };
+});
+
+//# sourceMappingURL=index.js.map