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rOACCT/node_modules/@babel/plugin-proposal-async-generator-functions/lib/for-await.js.map
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{
"version": 3,
"names": [
"buildForAwait",
"template",
"path",
"getAsyncIterator",
"node",
"scope",
"parent",
"stepKey",
"generateUidIdentifier",
"stepValue",
"t",
"memberExpression",
"identifier",
"left",
"declar",
"isIdentifier",
"isPattern",
"isMemberExpression",
"expressionStatement",
"assignmentExpression",
"isVariableDeclaration",
"variableDeclaration",
"kind",
"variableDeclarator",
"declarations",
"id",
"ITERATOR_HAD_ERROR_KEY",
"ITERATOR_ABRUPT_COMPLETION",
"ITERATOR_ERROR_KEY",
"ITERATOR_KEY",
"GET_ITERATOR",
"OBJECT",
"right",
"STEP_KEY",
"cloneNode",
"body",
"isLabeledParent",
"isLabeledStatement",
"tryBody",
"block",
"loop",
"labeledStatement",
"label",
"replaceParent"
],
"sources": [
"../src/for-await.ts"
],
"sourcesContent": [
"import { types as t, template } from \"@babel/core\";\nimport type { NodePath } from \"@babel/traverse\";\n\nconst buildForAwait = template(`\n async function wrapper() {\n var ITERATOR_ABRUPT_COMPLETION = false;\n var ITERATOR_HAD_ERROR_KEY = false;\n var ITERATOR_ERROR_KEY;\n try {\n for (\n var ITERATOR_KEY = GET_ITERATOR(OBJECT), STEP_KEY;\n ITERATOR_ABRUPT_COMPLETION = !(STEP_KEY = await ITERATOR_KEY.next()).done;\n ITERATOR_ABRUPT_COMPLETION = false\n ) {\n }\n } catch (err) {\n ITERATOR_HAD_ERROR_KEY = true;\n ITERATOR_ERROR_KEY = err;\n } finally {\n try {\n if (ITERATOR_ABRUPT_COMPLETION && ITERATOR_KEY.return != null) {\n await ITERATOR_KEY.return();\n }\n } finally {\n if (ITERATOR_HAD_ERROR_KEY) {\n throw ITERATOR_ERROR_KEY;\n }\n }\n }\n }\n`);\n\nexport default function (\n path: NodePath<t.ForOfStatement>,\n { getAsyncIterator }: { getAsyncIterator: t.Identifier },\n) {\n const { node, scope, parent } = path;\n\n const stepKey = scope.generateUidIdentifier(\"step\");\n const stepValue = t.memberExpression(stepKey, t.identifier(\"value\"));\n const left = node.left;\n let declar;\n\n if (t.isIdentifier(left) || t.isPattern(left) || t.isMemberExpression(left)) {\n // for await (i of test), for await ({ i } of test)\n declar = t.expressionStatement(\n t.assignmentExpression(\"=\", left, stepValue),\n );\n } else if (t.isVariableDeclaration(left)) {\n // for await (let i of test)\n declar = t.variableDeclaration(left.kind, [\n t.variableDeclarator(left.declarations[0].id, stepValue),\n ]);\n }\n let template = buildForAwait({\n ITERATOR_HAD_ERROR_KEY: scope.generateUidIdentifier(\"didIteratorError\"),\n ITERATOR_ABRUPT_COMPLETION: scope.generateUidIdentifier(\n \"iteratorAbruptCompletion\",\n ),\n ITERATOR_ERROR_KEY: scope.generateUidIdentifier(\"iteratorError\"),\n ITERATOR_KEY: scope.generateUidIdentifier(\"iterator\"),\n GET_ITERATOR: getAsyncIterator,\n OBJECT: node.right,\n STEP_KEY: t.cloneNode(stepKey),\n });\n\n // remove async function wrapper\n // @ts-expect-error todo(flow->ts) improve type annotation for buildForAwait\n template = template.body.body as t.Statement[];\n\n const isLabeledParent = t.isLabeledStatement(parent);\n const tryBody = (template[3] as t.TryStatement).block.body;\n const loop = tryBody[0] as t.ForStatement;\n\n if (isLabeledParent) {\n tryBody[0] = t.labeledStatement(parent.label, loop);\n }\n\n return {\n replaceParent: isLabeledParent,\n node: template,\n declar,\n loop,\n };\n}\n"
],
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