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89 lines
2.4 KiB
89 lines
2.4 KiB
4 years ago
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"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 = _default;
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var _core = require("@babel/core");
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const buildForAwait = (0, _core.template)(`
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async function wrapper() {
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var ITERATOR_COMPLETION = true;
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var ITERATOR_HAD_ERROR_KEY = false;
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var ITERATOR_ERROR_KEY;
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try {
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for (
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var ITERATOR_KEY = GET_ITERATOR(OBJECT), STEP_KEY, STEP_VALUE;
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(
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STEP_KEY = await ITERATOR_KEY.next(),
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ITERATOR_COMPLETION = STEP_KEY.done,
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STEP_VALUE = await STEP_KEY.value,
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!ITERATOR_COMPLETION
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);
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ITERATOR_COMPLETION = true) {
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}
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} catch (err) {
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ITERATOR_HAD_ERROR_KEY = true;
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ITERATOR_ERROR_KEY = err;
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} finally {
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try {
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if (!ITERATOR_COMPLETION && ITERATOR_KEY.return != null) {
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await ITERATOR_KEY.return();
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}
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} finally {
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if (ITERATOR_HAD_ERROR_KEY) {
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throw ITERATOR_ERROR_KEY;
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}
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}
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}
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}
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`);
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function _default(path, {
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getAsyncIterator
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}) {
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const {
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node,
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scope,
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parent
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} = path;
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const stepKey = scope.generateUidIdentifier("step");
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const stepValue = scope.generateUidIdentifier("value");
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const left = node.left;
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let declar;
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if (_core.types.isIdentifier(left) || _core.types.isPattern(left) || _core.types.isMemberExpression(left)) {
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declar = _core.types.expressionStatement(_core.types.assignmentExpression("=", left, stepValue));
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} else if (_core.types.isVariableDeclaration(left)) {
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declar = _core.types.variableDeclaration(left.kind, [_core.types.variableDeclarator(left.declarations[0].id, stepValue)]);
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}
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let template = buildForAwait({
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ITERATOR_HAD_ERROR_KEY: scope.generateUidIdentifier("didIteratorError"),
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ITERATOR_COMPLETION: scope.generateUidIdentifier("iteratorNormalCompletion"),
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ITERATOR_ERROR_KEY: scope.generateUidIdentifier("iteratorError"),
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ITERATOR_KEY: scope.generateUidIdentifier("iterator"),
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GET_ITERATOR: getAsyncIterator,
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OBJECT: node.right,
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STEP_VALUE: stepValue,
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STEP_KEY: stepKey
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});
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template = template.body.body;
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const isLabeledParent = _core.types.isLabeledStatement(parent);
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const tryBody = template[3].block.body;
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const loop = tryBody[0];
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if (isLabeledParent) {
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tryBody[0] = _core.types.labeledStatement(parent.label, loop);
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}
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return {
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replaceParent: isLabeledParent,
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node: template,
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declar,
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loop
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};
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}
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