Improve code quality and write tests

node_modules/@babel/plugin-transform-template-literals/lib/index.js

@@ -0,0 +1,148 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+function _helperPluginUtils() {
+  const data = require("@babel/helper-plugin-utils");
+
+  _helperPluginUtils = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function _core() {
+  const data = require("@babel/core");
+
+  _core = function () {
+    return data;
+  };
+
+  return data;
+}
+
+var _default = (0, _helperPluginUtils().declare)((api, options) => {
+  api.assertVersion(7);
+  const {
+    loose
+  } = options;
+  let helperName = "taggedTemplateLiteral";
+  if (loose) helperName += "Loose";
+
+  function buildConcatCallExpressions(items) {
+    let avail = true;
+    return items.reduce(function (left, right) {
+      let canBeInserted = _core().types.isLiteral(right);
+
+      if (!canBeInserted && avail) {
+        canBeInserted = true;
+        avail = false;
+      }
+
+      if (canBeInserted && _core().types.isCallExpression(left)) {
+        left.arguments.push(right);
+        return left;
+      }
+
+      return _core().types.callExpression(_core().types.memberExpression(left, _core().types.identifier("concat")), [right]);
+    });
+  }
+
+  return {
+    name: "transform-template-literals",
+    visitor: {
+      TaggedTemplateExpression(path) {
+        const {
+          node
+        } = path;
+        const {
+          quasi
+        } = node;
+        const strings = [];
+        const raws = [];
+        let isStringsRawEqual = true;
+
+        for (const elem of quasi.quasis) {
+          const {
+            raw,
+            cooked
+          } = elem.value;
+          const value = cooked == null ? path.scope.buildUndefinedNode() : _core().types.stringLiteral(cooked);
+          strings.push(value);
+          raws.push(_core().types.stringLiteral(raw));
+
+          if (raw !== cooked) {
+            isStringsRawEqual = false;
+          }
+        }
+
+        const scope = path.scope.getProgramParent();
+        const templateObject = scope.generateUidIdentifier("templateObject");
+        const helperId = this.addHelper(helperName);
+        const callExpressionInput = [_core().types.arrayExpression(strings)];
+
+        if (!isStringsRawEqual) {
+          callExpressionInput.push(_core().types.arrayExpression(raws));
+        }
+
+        const lazyLoad = _core().template.ast`
+          function ${templateObject}() {
+            const data = ${_core().types.callExpression(helperId, callExpressionInput)};
+            ${templateObject} = function() { return data };
+            return data;
+          } 
+        `;
+        scope.path.unshiftContainer("body", lazyLoad);
+        path.replaceWith(_core().types.callExpression(node.tag, [_core().types.callExpression(_core().types.cloneNode(templateObject), []), ...quasi.expressions]));
+      },
+
+      TemplateLiteral(path) {
+        const nodes = [];
+        const expressions = path.get("expressions");
+        let index = 0;
+
+        for (const elem of path.node.quasis) {
+          if (elem.value.cooked) {
+            nodes.push(_core().types.stringLiteral(elem.value.cooked));
+          }
+
+          if (index < expressions.length) {
+            const expr = expressions[index++];
+            const node = expr.node;
+
+            if (!_core().types.isStringLiteral(node, {
+              value: ""
+            })) {
+              nodes.push(node);
+            }
+          }
+        }
+
+        const considerSecondNode = !loose || !_core().types.isStringLiteral(nodes[1]);
+
+        if (!_core().types.isStringLiteral(nodes[0]) && considerSecondNode) {
+          nodes.unshift(_core().types.stringLiteral(""));
+        }
+
+        let root = nodes[0];
+
+        if (loose) {
+          for (let i = 1; i < nodes.length; i++) {
+            root = _core().types.binaryExpression("+", root, nodes[i]);
+          }
+        } else if (nodes.length > 1) {
+          root = buildConcatCallExpressions(nodes);
+        }
+
+        path.replaceWith(root);
+      }
+
+    }
+  };
+});
+
+exports.default = _default;