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5.1 KiB
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{"version":3,"names":["_core","require","buildForAwait","template","_default","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"],"mappings":";;;;;;AAAA,IAAAA,KAAA,GAAAC,OAAA;AAGA,MAAMC,aAAa,GAAG,IAAAC,cAAQ,EAAE;AAChC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,CAAC,CAAC;AAEa,SAAAC,SACbC,IAAgC,EAChC;EAAEC;AAAqD,CAAC,EACxD;EACA,MAAM;IAAEC,IAAI;IAAEC,KAAK;IAAEC;EAAO,CAAC,GAAGJ,IAAI;EAEpC,MAAMK,OAAO,GAAGF,KAAK,CAACG,qBAAqB,CAAC,MAAM,CAAC;EACnD,MAAMC,SAAS,GAAGC,WAAC,CAACC,gBAAgB,CAACJ,OAAO,EAAEG,WAAC,CAACE,UAAU,CAAC,OAAO,CAAC,CAAC;EACpE,MAAMC,IAAI,GAAGT,IAAI,CAACS,IAAI;EACtB,IAAIC,MAAM;EAEV,IAAIJ,WAAC,CAACK,YAAY,CAACF,IAAI,CAAC,IAAIH,WAAC,CAACM,SAAS,CAACH,IAAI,CAAC,IAAIH,WAAC,CAACO,kBAAkB,CAACJ,IAAI,CAAC,EAAE;I
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