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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = readInitialCoverage;
var _parser = require("@babel/parser");
var _traverse = _interopRequireDefault(require("@babel/traverse"));
var t = _interopRequireWildcard(require("@babel/types"));
var _constants = require("./constants");
var _instrumenter = require("./instrumenter");
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function readInitialCoverage(code) {
if (typeof code !== 'string') {
throw new Error('Code must be a string');
} // Parse as leniently as possible
const ast = (0, _parser.parse)(code, {
allowImportExportEverywhere: true,
allowReturnOutsideFunction: true,
allowSuperOutsideMethod: true,
sourceType: 'script',
plugins: (0, _instrumenter.defaultOpts)().plugins
});
let covScope;
(0, _traverse.default)(ast, {
ObjectProperty(path) {
const node = path.node;
if (!node.computed && t.isIdentifier(node.key) && 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 (var _i = 0, _arr = ['path', 'hash', 'gcv', 'coverageData']; _i < _arr.length; _i++) {
const key = _arr[_i];
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];
return result;
}