1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.default = _default;
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7 |
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8 | var _helperHoistVariables = _interopRequireDefault(require("@babel/helper-hoist-variables"));
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9 |
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10 | var t = _interopRequireWildcard(require("@babel/types"));
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11 |
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12 | function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
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13 |
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14 | function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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15 |
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16 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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17 |
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18 | const visitor = {
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19 | enter(path, state) {
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20 | if (path.isThisExpression()) {
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21 | state.foundThis = true;
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22 | }
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23 |
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24 | if (path.isReferencedIdentifier({
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25 | name: "arguments"
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26 | })) {
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27 | state.foundArguments = true;
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28 | }
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29 | },
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30 |
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31 | Function(path) {
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32 | path.skip();
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33 | }
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34 |
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35 | };
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36 |
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37 | function _default(path, scope = path.scope) {
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38 | const {
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39 | node
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40 | } = path;
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41 | const container = t.functionExpression(null, [], node.body, node.generator, node.async);
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42 | let callee = container;
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43 | let args = [];
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44 | (0, _helperHoistVariables.default)(path, id => scope.push({
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45 | id
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46 | }));
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47 | const state = {
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48 | foundThis: false,
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49 | foundArguments: false
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50 | };
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51 | path.traverse(visitor, state);
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52 |
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53 | if (state.foundArguments || state.foundThis) {
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54 | callee = t.memberExpression(container, t.identifier("apply"));
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55 | args = [];
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56 |
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57 | if (state.foundThis) {
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58 | args.push(t.thisExpression());
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59 | }
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60 |
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61 | if (state.foundArguments) {
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62 | if (!state.foundThis) args.push(t.nullLiteral());
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63 | args.push(t.identifier("arguments"));
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64 | }
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65 | }
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66 |
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67 | let call = t.callExpression(callee, args);
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68 | if (node.generator) call = t.yieldExpression(call, true);
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69 | return t.returnStatement(call);
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70 | } |
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