80 lines
2.3 KiB
JavaScript
80 lines
2.3 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = readInitialCoverage;
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var _parser = require("@babel/parser");
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var _traverse = _interopRequireDefault(require("@babel/traverse"));
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var t = _interopRequireWildcard(require("@babel/types"));
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var _constants = require("./constants");
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var _instrumenter = require("./instrumenter");
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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; } }
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function readInitialCoverage(code) {
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if (typeof code !== 'string') {
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throw new Error('Code must be a string');
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} // Parse as leniently as possible
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const ast = (0, _parser.parse)(code, {
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allowImportExportEverywhere: true,
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allowReturnOutsideFunction: true,
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allowSuperOutsideMethod: true,
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sourceType: 'script',
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plugins: (0, _instrumenter.defaultOpts)().plugins
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});
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let covScope;
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(0, _traverse.default)(ast, {
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ObjectProperty(path) {
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const node = path.node;
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if (!node.computed && t.isIdentifier(node.key) && node.key.name === _constants.MAGIC_KEY) {
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const magicValue = path.get('value').evaluate();
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if (!magicValue.confident || magicValue.value !== _constants.MAGIC_VALUE) {
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return;
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}
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covScope = path.scope.getFunctionParent() || path.scope.getProgramParent();
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path.stop();
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}
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}
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});
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if (!covScope) {
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return null;
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}
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const result = {};
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for (var _i = 0, _arr = ['path', 'hash', 'gcv', 'coverageData']; _i < _arr.length; _i++) {
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const key = _arr[_i];
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const binding = covScope.getOwnBinding(key);
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if (!binding) {
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return null;
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}
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const valuePath = binding.path.get('init');
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const value = valuePath.evaluate();
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if (!value.confident) {
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return null;
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}
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result[key] = value.value;
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}
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delete result.coverageData[_constants.MAGIC_KEY];
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return result;
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}
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