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