119 lines
2.5 KiB
JavaScript
119 lines
2.5 KiB
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, '__esModule', {
|
|
value: true
|
|
});
|
|
exports.default = void 0;
|
|
|
|
function _v() {
|
|
const data = _interopRequireDefault(require('v8'));
|
|
|
|
_v = function _v() {
|
|
return data;
|
|
};
|
|
|
|
return data;
|
|
}
|
|
|
|
function _vm() {
|
|
const data = _interopRequireDefault(require('vm'));
|
|
|
|
_vm = function _vm() {
|
|
return data;
|
|
};
|
|
|
|
return data;
|
|
}
|
|
|
|
function _prettyFormat() {
|
|
const data = _interopRequireDefault(require('pretty-format'));
|
|
|
|
_prettyFormat = function _prettyFormat() {
|
|
return data;
|
|
};
|
|
|
|
return data;
|
|
}
|
|
|
|
function _interopRequireDefault(obj) {
|
|
return obj && obj.__esModule ? obj : {default: obj};
|
|
}
|
|
|
|
function _defineProperty(obj, key, value) {
|
|
if (key in obj) {
|
|
Object.defineProperty(obj, key, {
|
|
value: value,
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: true
|
|
});
|
|
} else {
|
|
obj[key] = value;
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
class _default {
|
|
constructor(value) {
|
|
_defineProperty(this, '_isReferenceBeingHeld', void 0);
|
|
|
|
if (this._isPrimitive(value)) {
|
|
throw new TypeError(
|
|
[
|
|
'Primitives cannot leak memory.',
|
|
'You passed a ' +
|
|
typeof value +
|
|
': <' +
|
|
(0, _prettyFormat().default)(value) +
|
|
'>'
|
|
].join(' ')
|
|
);
|
|
}
|
|
|
|
let weak;
|
|
|
|
try {
|
|
// eslint-disable-next-line import/no-extraneous-dependencies
|
|
weak = require('weak');
|
|
} catch (err) {
|
|
if (!err || err.code !== 'MODULE_NOT_FOUND') {
|
|
throw err;
|
|
}
|
|
|
|
throw new Error(
|
|
'The leaking detection mechanism requires the "weak" package to be installed and work. ' +
|
|
'Please install it as a dependency on your main project'
|
|
);
|
|
}
|
|
|
|
weak(value, () => (this._isReferenceBeingHeld = false));
|
|
this._isReferenceBeingHeld = true; // Ensure value is not leaked by the closure created by the "weak" callback.
|
|
|
|
value = null;
|
|
}
|
|
|
|
isLeaking() {
|
|
this._runGarbageCollector();
|
|
|
|
return this._isReferenceBeingHeld;
|
|
}
|
|
|
|
_runGarbageCollector() {
|
|
const isGarbageCollectorHidden = !global.gc; // GC is usually hidden, so we have to expose it before running.
|
|
|
|
_v().default.setFlagsFromString('--expose-gc');
|
|
|
|
_vm().default.runInNewContext('gc')(); // The GC was not initially exposed, so let's hide it again.
|
|
|
|
if (isGarbageCollectorHidden) {
|
|
_v().default.setFlagsFromString('--no-expose-gc');
|
|
}
|
|
}
|
|
|
|
_isPrimitive(value) {
|
|
return value !== Object(value);
|
|
}
|
|
}
|
|
|
|
exports.default = _default;
|