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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = readInitialCoverage;
var _constants = require('./constants');
var _babylon = require('babylon');
var _babelTraverse = require('babel-traverse');
var _babelTraverse2 = _interopRequireDefault(_babelTraverse);
var _babelTypes = require('babel-types');
var t = _interopRequireWildcard(_babelTypes);
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)) 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
var ast = (0, _babylon.parse)(code, {
allowImportExportEverywhere: true,
allowReturnOutsideFunction: true,
allowSuperOutsideMethod: true,
sourceType: "script", // I think ?
plugins: ["*"]
});
var covScope = void 0;
(0, _babelTraverse2.default)(ast, {
ObjectProperty: function ObjectProperty(path) {
var node = path.node;
if (!node.computed && t.isIdentifier(node.key) && node.key.name === _constants.MAGIC_KEY) {
var magicValue = path.get('value').evaluate();
if (!magicValue.confident || magicValue.value !== _constants.MAGIC_VALUE) {
return;
}
covScope = path.scope.getFunctionParent();
path.stop();
}
}
});
if (!covScope) {
return null;
}
var result = {};
var _arr = ['path', 'hash', 'gcv', 'coverageData'];
for (var _i = 0; _i < _arr.length; _i++) {
var key = _arr[_i];
var binding = covScope.getOwnBinding(key);
if (!binding) {
return null;
}
var valuePath = binding.path.get('init');
var value = valuePath.evaluate();
if (!value.confident) {
return null;
}
result[key] = value.value;
}
delete result.coverageData[_constants.MAGIC_KEY];
return result;
}
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