72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports['default'] = injectDynamicImport;
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/* eslint-disable no-underscore-dangle */
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var DynamicImportKey = exports.DynamicImportKey = 'Import';
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function injectDynamicImport(acorn) {
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var tt = acorn.tokTypes;
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// NOTE: This allows `yield import()` to parse correctly.
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tt._import.startsExpr = true;
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function parseDynamicImport() {
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var node = this.startNode();
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this.next();
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if (this.type !== tt.parenL) {
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this.unexpected();
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}
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return this.finishNode(node, DynamicImportKey);
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}
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function peekNext() {
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return this.input[this.pos];
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}
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// eslint-disable-next-line no-param-reassign
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acorn.plugins.dynamicImport = function () {
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function dynamicImportPlugin(instance) {
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instance.extend('parseStatement', function (nextMethod) {
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return function () {
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function parseStatement() {
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var node = this.startNode();
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if (this.type === tt._import) {
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var nextToken = peekNext.call(this);
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if (nextToken === tt.parenL.label) {
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var expr = this.parseExpression();
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return this.parseExpressionStatement(node, expr);
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}
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}
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for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
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args[_key] = arguments[_key];
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}
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return nextMethod.apply(this, args);
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}
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return parseStatement;
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}();
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});
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instance.extend('parseExprAtom', function (nextMethod) {
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return function () {
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function parseExprAtom(refDestructuringErrors) {
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if (this.type === tt._import) {
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return parseDynamicImport.call(this);
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}
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return nextMethod.call(this, refDestructuringErrors);
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}
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return parseExprAtom;
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}();
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});
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}
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return dynamicImportPlugin;
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}();
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return acorn;
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}
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