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// Flags: --experimental-modules
/* eslint-disable node-core/required-modules */
import assert from 'assert';
let knownGlobals = [
Buffer,
clearImmediate,
clearInterval,
clearTimeout,
console,
constructor, // Enumerable in V8 3.21.
global,
process,
setImmediate,
setInterval,
setTimeout
];
if (process.env.NODE_TEST_KNOWN_GLOBALS) {
const knownFromEnv = process.env.NODE_TEST_KNOWN_GLOBALS.split(',');
allowGlobals(...knownFromEnv);
}
export function allowGlobals(...whitelist) {
knownGlobals = knownGlobals.concat(whitelist);
}
export function leakedGlobals() {
//add possible expected globals
if (global.gc) {
knownGlobals.push(global.gc);
}
if (global.DTRACE_HTTP_SERVER_RESPONSE) {
knownGlobals.push(DTRACE_HTTP_SERVER_RESPONSE);
knownGlobals.push(DTRACE_HTTP_SERVER_REQUEST);
knownGlobals.push(DTRACE_HTTP_CLIENT_RESPONSE);
knownGlobals.push(DTRACE_HTTP_CLIENT_REQUEST);
knownGlobals.push(DTRACE_NET_STREAM_END);
knownGlobals.push(DTRACE_NET_SERVER_CONNECTION);
}
if (global.COUNTER_NET_SERVER_CONNECTION) {
knownGlobals.push(COUNTER_NET_SERVER_CONNECTION);
knownGlobals.push(COUNTER_NET_SERVER_CONNECTION_CLOSE);
knownGlobals.push(COUNTER_HTTP_SERVER_REQUEST);
knownGlobals.push(COUNTER_HTTP_SERVER_RESPONSE);
knownGlobals.push(COUNTER_HTTP_CLIENT_REQUEST);
knownGlobals.push(COUNTER_HTTP_CLIENT_RESPONSE);
}
if (global.ArrayBuffer) {
knownGlobals.push(ArrayBuffer);
knownGlobals.push(Int8Array);
knownGlobals.push(Uint8Array);
knownGlobals.push(Uint8ClampedArray);
knownGlobals.push(Int16Array);
knownGlobals.push(Uint16Array);
knownGlobals.push(Int32Array);
knownGlobals.push(Uint32Array);
knownGlobals.push(Float32Array);
knownGlobals.push(Float64Array);
knownGlobals.push(DataView);
}
// Harmony features.
if (global.Proxy) {
knownGlobals.push(Proxy);
}
if (global.Symbol) {
knownGlobals.push(Symbol);
}
const leaked = [];
for (const val in global) {
if (!knownGlobals.includes(global[val])) {
leaked.push(val);
}
}
if (global.__coverage__) {
return leaked.filter((varname) => !/^(?:cov_|__cov)/.test(varname));
} else {
return leaked;
}
}
// Turn this off if the test should not check for global leaks.
export let globalCheck = true; // eslint-disable-line
process.on('exit', function() {
if (!globalCheck) return;
const leaked = leakedGlobals();
if (leaked.length > 0) {
assert.fail(`Unexpected global(s) found: ${leaked.join(', ')}`);
}
});
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