yeet

node_modules/@babel/preset-modules/lib/plugins/transform-jsx-spread/index.js

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+"use strict";
+
+exports.__esModule = true;
+exports.default = void 0;
+
+var _esutils = _interopRequireDefault(require("esutils"));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Converts JSX Spread arguments into Object Spread, avoiding Babel's helper or Object.assign injection.
+ * Input:
+ * 	 <div a="1" {...b} />
+ * Output:
+ *   <div {...{ a: "1", ...b }} />
+ * ...which Babel converts to:
+ *   h("div", { a: "1", ...b })
+ */
+var _default = ({
+  types: t
+}) => {
+  // converts a set of JSXAttributes to an Object.assign() call
+  function convertAttributesAssign(attributes) {
+    const args = [];
+
+    for (let i = 0, current; i < attributes.length; i++) {
+      const node = attributes[i];
+
+      if (t.isJSXSpreadAttribute(node)) {
+        // the first attribute is a spread, avoid copying all other attributes onto it
+        if (i === 0) {
+          args.push(t.objectExpression([]));
+        }
+
+        current = null;
+        args.push(node.argument);
+      } else {
+        const name = getAttributeName(node);
+        const value = getAttributeValue(node);
+
+        if (!current) {
+          current = t.objectExpression([]);
+          args.push(current);
+        }
+
+        current.properties.push(t.objectProperty(name, value));
+      }
+    }
+
+    return t.callExpression(t.memberExpression(t.identifier("Object"), t.identifier("assign")), args);
+  } // Converts a JSXAttribute to the equivalent ObjectExpression property
+
+
+  function convertAttributeSpread(node) {
+    if (t.isJSXSpreadAttribute(node)) {
+      return t.spreadElement(node.argument);
+    }
+
+    const name = getAttributeName(node);
+    const value = getAttributeValue(node);
+    return t.inherits(t.objectProperty(name, value), node);
+  } // Convert a JSX attribute name to an Object expression property name
+
+
+  function getAttributeName(node) {
+    if (t.isJSXNamespacedName(node.name)) {
+      return t.stringLiteral(node.name.namespace.name + ":" + node.name.name.name);
+    }
+
+    if (_esutils.default.keyword.isIdentifierNameES6(node.name.name)) {
+      return t.identifier(node.name.name);
+    }
+
+    return t.stringLiteral(node.name.name);
+  } // Convert a JSX attribute value to a JavaScript expression value
+
+
+  function getAttributeValue(node) {
+    let value = node.value || t.booleanLiteral(true);
+
+    if (t.isJSXExpressionContainer(value)) {
+      value = value.expression;
+    } else if (t.isStringLiteral(value)) {
+      value.value = value.value.replace(/\n\s+/g, " "); // "raw" JSXText should not be used from a StringLiteral because it needs to be escaped.
+
+      if (value.extra && value.extra.raw) {
+        delete value.extra.raw;
+      }
+    }
+
+    return value;
+  }
+
+  return {
+    name: "transform-jsx-spread",
+    visitor: {
+      JSXOpeningElement(path, state) {
+        const useSpread = state.opts.useSpread === true;
+        const hasSpread = path.node.attributes.some(attr => t.isJSXSpreadAttribute(attr)); // ignore JSX Elements without spread or with lone spread:
+
+        if (!hasSpread || path.node.attributes.length === 1) return;
+
+        if (useSpread) {
+          path.node.attributes = [t.jsxSpreadAttribute(t.objectExpression(path.node.attributes.map(convertAttributeSpread)))];
+        } else {
+          path.node.attributes = [t.jsxSpreadAttribute(convertAttributesAssign(path.node.attributes))];
+        }
+      }
+
+    }
+  };
+};
+
+exports.default = _default;
+module.exports = exports.default;