"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.default = readInitialCoverage; var _core = require("@babel/core"); var _schema = require("@istanbuljs/schema"); var _constants = require("./constants"); function getAst(code) { if (typeof code === 'object' && typeof code.type === 'string') { // Assume code is already a babel ast. return code; } if (typeof code !== 'string') { throw new Error('Code must be a string'); } // Parse as leniently as possible return (0, _core.parseSync)(code, { babelrc: false, configFile: false, parserOpts: { allowImportExportEverywhere: true, allowReturnOutsideFunction: true, allowSuperOutsideMethod: true, sourceType: 'script', plugins: _schema.defaults.instrumenter.parserPlugins } }); } function readInitialCoverage(code) { const ast = getAst(code); let covScope; (0, _core.traverse)(ast, { ObjectProperty(path) { const { node } = path; if (!node.computed && path.get('key').isIdentifier() && node.key.name === _constants.MAGIC_KEY) { const magicValue = path.get('value').evaluate(); if (!magicValue.confident || magicValue.value !== _constants.MAGIC_VALUE) { return; } covScope = path.scope.getFunctionParent() || path.scope.getProgramParent(); path.stop(); } } }); if (!covScope) { return null; } const result = {}; for (const key of ['path', 'hash', 'gcv', 'coverageData']) { const binding = covScope.getOwnBinding(key); if (!binding) { return null; } const valuePath = binding.path.get('init'); const value = valuePath.evaluate(); if (!value.confident) { return null; } result[key] = value.value; } delete result.coverageData[_constants.MAGIC_KEY]; delete result.coverageData.hash; return result; }