| 1 | {"version":3,"names":["_helperPluginUtils","require","_core","_default","exports","default","declare","api","options","_api$assumption","_api$assumption2","assertVersion","ignoreToPrimitiveHint","assumption","loose","mutableTemplateObject","helperName","buildConcatCallExpressions","items","avail","reduce","left","right","canBeInserted","t","isLiteral","isCallExpression","arguments","push","callExpression","memberExpression","identifier","name","visitor","TaggedTemplateExpression","path","node","quasi","strings","raws","isStringsRawEqual","elem","quasis","raw","cooked","value","scope","buildUndefinedNode","stringLiteral","helperArgs","arrayExpression","tmp","generateUidIdentifier","getProgramParent","id","cloneNode","replaceWith","tag","template","expression","ast","addHelper","expressions","TemplateLiteral","parent","type","nodes","get","index","length","expr","isStringLiteral","unshift","root","i","binaryExpression"],"sources":["../src/index.ts"],"sourcesContent":["import { declare } from \"@babel/helper-plugin-utils\";\nimport { template, types as t } from \"@babel/core\";\nimport type { NodePath } from \"@babel/traverse\";\n\nexport interface Options {\n loose?: boolean;\n}\n\nexport default declare((api, options: Options) => {\n api.assertVersion(\n process.env.BABEL_8_BREAKING && process.env.IS_PUBLISH\n ? PACKAGE_JSON.version\n : 7,\n );\n\n const ignoreToPrimitiveHint =\n api.assumption(\"ignoreToPrimitiveHint\") ?? options.loose;\n const mutableTemplateObject =\n api.assumption(\"mutableTemplateObject\") ?? options.loose;\n\n let helperName = \"taggedTemplateLiteral\";\n if (mutableTemplateObject) helperName += \"Loose\";\n\n /**\n * This function groups the objects into multiple calls to `.concat()` in\n * order to preserve execution order of the primitive conversion, e.g.\n *\n * \"\".concat(obj.foo, \"foo\", obj2.foo, \"foo2\")\n *\n * would evaluate both member expressions _first_ then, `concat` will\n * convert each one to a primitive, whereas\n *\n * \"\".concat(obj.foo, \"foo\").concat(obj2.foo, \"foo2\")\n *\n * would evaluate the member, then convert it to a primitive, then evaluate\n * the second member and convert that one, which reflects the spec behavior\n * of template literals.\n */\n function buildConcatCallExpressions(items: t.Expression[]): t.CallExpression {\n let avail = true;\n // @ts-expect-error items must not be empty\n return items.reduce(function (left, right) {\n let canBeInserted = t.isLiteral(right);\n\n if (!canBeInserted && avail) {\n canBeInserted = true;\n avail = false;\n }\n if (canBeInserted && t.isCallExpression(left)) {\n left.arguments.push(right);\n return left;\n }\n return t.callExpression(\n t.memberExpression(left, t.identifier(\"concat\")),\n [right],\n );\n });\n }\n\n return {\n name: \"transform-template-literals\",\n\n visitor: {\n TaggedTemplateExpression(path) {\n const { node } = path;\n const { quasi } = node;\n\n const strings = [];\n const raws = [];\n\n // Flag variable to check if contents of strings and raw are equal\n let isStringsRawEqual = true;\n\n for (const elem of quasi.quasis) {\n const { raw, cooked } = elem.value;\n const value =\n cooked == null\n ? path.scope.buildUndefinedNode()\n : t.stringLiteral(cooked);\n\n strings.push(value);\n raws.push(t.stringLiteral(raw));\n\n if (raw !== cooked) {\n // false even if one of raw and cooked are not equal\n isStringsRawEqual = false;\n }\n }\n\n const helperArgs = [t.arrayExpression(strings)];\n // only add raw arrayExpression if there is any difference between raws and strings\n if (!isStringsRawEqual) {\n helperArgs.push(t.arrayExpression(raws));\n }\n\n const tmp = path.scope.generateUidIdentifier(\"templateObject\");\n path.scope.getProgramParent().push({ id: t.cloneNode(tmp) });\n\n path.replaceWith(\n t.callExpression(node.tag, [\n template.expression.ast`\n ${t.cloneNode(tmp)} || (\n ${tmp} = ${this.addHelper(helperName)}(${helperArgs})\n )\n `,\n // @ts-expect-error Fixme: quasi.expressions may contain TSAnyKeyword\n ...quasi.expressions,\n ]),\n );\n },\n\n TemplateLiteral(path) {\n // Skip TemplateLiteral in TSLiteralType\n if (path.parent.type === \"TSLiteralType\") {\n return;\n }\n const nodes: t.Expression[] = [];\n const expressions = path.get(\"expressions\") as NodePath<t.Expression>[];\n\n let index = 0;\n for (const elem of path.node.quasis) {\n if (elem.value.cooked) {\n nodes.push(t.stringLiteral(elem.value.cooked));\n }\n\n if (index < expressions.length) {\n const expr = expressions[index++];\n const node = expr.node;\n if (!t.isStringLiteral(node, { value: \"\" })) {\n nodes.push(node);\n }\n }\n }\n\n // since `+` is left-to-right associative\n // ensure the first node is a string if first/second isn't\n if (\n !t.isStringLiteral(nodes[0]) &&\n !(ignoreToPrimitiveHint && t.isStringLiteral(nodes[1]))\n ) {\n nodes.unshift(t.stringLiteral(\"\"));\n }\n let root = nodes[0];\n\n if (ignoreToPrimitiveHint) {\n for (let i = 1; 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