node:constants

#Import

import constants from "nstdlib/constants";

Note

Its behavior matches Node.js. Details: every constant compared by value against the host builtin. The one difference is defaultCipherList, which real Node also has once crypto has been loaded first.

#Runtime support

Where it runs	Status	Export coverage	Details
nstd	✅ works	–	1/1 of Node's own eligible tests pass under nstd.
Browser	❔ not tested	100% of Node.js	It imports with the small process shim. 235/235 Node.js exports are available. No module-specific behavior test ran.
Node.js (host)	✅ works	100% of Node.js	235/235 exports.

#Exports (235 of 235)

Each cell shows what happens when code reads an export:

✅ Available through every import style. A named error also counts.
⚠️ Available through only some import styles.
❔ The export exists but has no value.
❌ The export does not exist.
– This environment was not measured.

Show all 236 exports

Export	Node.js	nstdlib	browser
`COPYFILE_EXCL`	✅	✅	✅
`COPYFILE_FICLONE`	✅	✅	✅
`COPYFILE_FICLONE_FORCE`	✅	✅	✅
`DH_CHECK_P_NOT_PRIME`	✅	✅	✅
`DH_CHECK_P_NOT_SAFE_PRIME`	✅	✅	✅
`DH_NOT_SUITABLE_GENERATOR`	✅	✅	✅
`DH_UNABLE_TO_CHECK_GENERATOR`	✅	✅	✅
`E2BIG`	✅	✅	✅
`EACCES`	✅	✅	✅
`EADDRINUSE`	✅	✅	✅
`EADDRNOTAVAIL`	✅	✅	✅
`EAFNOSUPPORT`	✅	✅	✅
`EAGAIN`	✅	✅	✅
`EALREADY`	✅	✅	✅
`EBADF`	✅	✅	✅
`EBADMSG`	✅	✅	✅
`EBUSY`	✅	✅	✅
`ECANCELED`	✅	✅	✅
`ECHILD`	✅	✅	✅
`ECONNABORTED`	✅	✅	✅
`ECONNREFUSED`	✅	✅	✅
`ECONNRESET`	✅	✅	✅
`EDEADLK`	✅	✅	✅
`EDESTADDRREQ`	✅	✅	✅
`EDOM`	✅	✅	✅
`EDQUOT`	✅	✅	✅
`EEXIST`	✅	✅	✅
`EFAULT`	✅	✅	✅
`EFBIG`	✅	✅	✅
`EHOSTUNREACH`	✅	✅	✅
`EIDRM`	✅	✅	✅
`EILSEQ`	✅	✅	✅
`EINPROGRESS`	✅	✅	✅
`EINTR`	✅	✅	✅
`EINVAL`	✅	✅	✅
`EIO`	✅	✅	✅
`EISCONN`	✅	✅	✅
`EISDIR`	✅	✅	✅
`ELOOP`	✅	✅	✅
`EMFILE`	✅	✅	✅
`EMLINK`	✅	✅	✅
`EMSGSIZE`	✅	✅	✅
`EMULTIHOP`	✅	✅	✅
`ENAMETOOLONG`	✅	✅	✅
`ENETDOWN`	✅	✅	✅
`ENETRESET`	✅	✅	✅
`ENETUNREACH`	✅	✅	✅
`ENFILE`	✅	✅	✅
`ENGINE_METHOD_ALL`	✅	✅	✅
`ENGINE_METHOD_CIPHERS`	✅	✅	✅
`ENGINE_METHOD_DH`	✅	✅	✅
`ENGINE_METHOD_DIGESTS`	✅	✅	✅
`ENGINE_METHOD_DSA`	✅	✅	✅
`ENGINE_METHOD_EC`	✅	✅	✅
`ENGINE_METHOD_NONE`	✅	✅	✅
`ENGINE_METHOD_PKEY_ASN1_METHS`	✅	✅	✅
`ENGINE_METHOD_PKEY_METHS`	✅	✅	✅
`ENGINE_METHOD_RAND`	✅	✅	✅
`ENGINE_METHOD_RSA`	✅	✅	✅
`ENOBUFS`	✅	✅	✅
`ENODATA`	✅	✅	✅
`ENODEV`	✅	✅	✅
`ENOENT`	✅	✅	✅
`ENOEXEC`	✅	✅	✅
`ENOLCK`	✅	✅	✅
`ENOLINK`	✅	✅	✅
`ENOMEM`	✅	✅	✅
`ENOMSG`	✅	✅	✅
`ENOPROTOOPT`	✅	✅	✅
`ENOSPC`	✅	✅	✅
`ENOSR`	✅	✅	✅
`ENOSTR`	✅	✅	✅
`ENOSYS`	✅	✅	✅
`ENOTCONN`	✅	✅	✅
`ENOTDIR`	✅	✅	✅
`ENOTEMPTY`	✅	✅	✅
`ENOTSOCK`	✅	✅	✅
`ENOTSUP`	✅	✅	✅
`ENOTTY`	✅	✅	✅
`ENXIO`	✅	✅	✅
`EOPNOTSUPP`	✅	✅	✅
`EOVERFLOW`	✅	✅	✅
`EPERM`	✅	✅	✅
`EPIPE`	✅	✅	✅
`EPROTO`	✅	✅	✅
`EPROTONOSUPPORT`	✅	✅	✅
`EPROTOTYPE`	✅	✅	✅
`ERANGE`	✅	✅	✅
`EROFS`	✅	✅	✅
`ESPIPE`	✅	✅	✅
`ESRCH`	✅	✅	✅
`ESTALE`	✅	✅	✅
`ETIME`	✅	✅	✅
`ETIMEDOUT`	✅	✅	✅
`ETXTBSY`	✅	✅	✅
`EWOULDBLOCK`	✅	✅	✅
`EXDEV`	✅	✅	✅
`F_OK`	✅	✅	✅
`OPENSSL_VERSION_NUMBER`	✅	✅	✅
`O_APPEND`	✅	✅	✅
`O_CREAT`	✅	✅	✅
`O_DIRECT`	✅	✅	✅
`O_DIRECTORY`	✅	✅	✅
`O_DSYNC`	✅	✅	✅
`O_EXCL`	✅	✅	✅
`O_NOATIME`	✅	✅	✅
`O_NOCTTY`	✅	✅	✅
`O_NOFOLLOW`	✅	✅	✅
`O_NONBLOCK`	✅	✅	✅
`O_RDONLY`	✅	✅	✅
`O_RDWR`	✅	✅	✅
`O_SYNC`	✅	✅	✅
`O_TRUNC`	✅	✅	✅
`O_WRONLY`	✅	✅	✅
`POINT_CONVERSION_COMPRESSED`	✅	✅	✅
`POINT_CONVERSION_HYBRID`	✅	✅	✅
`POINT_CONVERSION_UNCOMPRESSED`	✅	✅	✅
`PRIORITY_ABOVE_NORMAL`	✅	✅	✅
`PRIORITY_BELOW_NORMAL`	✅	✅	✅
`PRIORITY_HIGH`	✅	✅	✅
`PRIORITY_HIGHEST`	✅	✅	✅
`PRIORITY_LOW`	✅	✅	✅
`PRIORITY_NORMAL`	✅	✅	✅
`RSA_NO_PADDING`	✅	✅	✅
`RSA_PKCS1_OAEP_PADDING`	✅	✅	✅
`RSA_PKCS1_PADDING`	✅	✅	✅
`RSA_PKCS1_PSS_PADDING`	✅	✅	✅
`RSA_PSS_SALTLEN_AUTO`	✅	✅	✅
`RSA_PSS_SALTLEN_DIGEST`	✅	✅	✅
`RSA_PSS_SALTLEN_MAX_SIGN`	✅	✅	✅
`RSA_SSLV23_PADDING`	✅	✅	✅
`RSA_X931_PADDING`	✅	✅	✅
`RTLD_DEEPBIND`	✅	✅	✅
`RTLD_GLOBAL`	✅	✅	✅
`RTLD_LAZY`	✅	✅	✅
`RTLD_LOCAL`	✅	✅	✅
`RTLD_NOW`	✅	✅	✅
`R_OK`	✅	✅	✅
`SIGABRT`	✅	✅	✅
`SIGALRM`	✅	✅	✅
`SIGBUS`	✅	✅	✅
`SIGCHLD`	✅	✅	✅
`SIGCONT`	✅	✅	✅
`SIGFPE`	✅	✅	✅
`SIGHUP`	✅	✅	✅
`SIGILL`	✅	✅	✅
`SIGINT`	✅	✅	✅
`SIGIO`	✅	✅	✅
`SIGIOT`	✅	✅	✅
`SIGKILL`	✅	✅	✅
`SIGPIPE`	✅	✅	✅
`SIGPOLL`	✅	✅	✅
`SIGPROF`	✅	✅	✅
`SIGPWR`	✅	✅	✅
`SIGQUIT`	✅	✅	✅
`SIGSEGV`	✅	✅	✅
`SIGSTKFLT`	✅	✅	✅
`SIGSTOP`	✅	✅	✅
`SIGSYS`	✅	✅	✅
`SIGTERM`	✅	✅	✅
`SIGTRAP`	✅	✅	✅
`SIGTSTP`	✅	✅	✅
`SIGTTIN`	✅	✅	✅
`SIGTTOU`	✅	✅	✅
`SIGURG`	✅	✅	✅
`SIGUSR1`	✅	✅	✅
`SIGUSR2`	✅	✅	✅
`SIGVTALRM`	✅	✅	✅
`SIGWINCH`	✅	✅	✅
`SIGXCPU`	✅	✅	✅
`SIGXFSZ`	✅	✅	✅
`SSL_OP_ALL`	✅	✅	✅
`SSL_OP_ALLOW_NO_DHE_KEX`	✅	✅	✅
`SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION`	✅	✅	✅
`SSL_OP_CIPHER_SERVER_PREFERENCE`	✅	✅	✅
`SSL_OP_CISCO_ANYCONNECT`	✅	✅	✅
`SSL_OP_COOKIE_EXCHANGE`	✅	✅	✅
`SSL_OP_CRYPTOPRO_TLSEXT_BUG`	✅	✅	✅
`SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS`	✅	✅	✅
`SSL_OP_LEGACY_SERVER_CONNECT`	✅	✅	✅
`SSL_OP_NO_COMPRESSION`	✅	✅	✅
`SSL_OP_NO_ENCRYPT_THEN_MAC`	✅	✅	✅
`SSL_OP_NO_QUERY_MTU`	✅	✅	✅
`SSL_OP_NO_RENEGOTIATION`	✅	✅	✅
`SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION`	✅	✅	✅
`SSL_OP_NO_SSLv2`	✅	✅	✅
`SSL_OP_NO_SSLv3`	✅	✅	✅
`SSL_OP_NO_TICKET`	✅	✅	✅
`SSL_OP_NO_TLSv1`	✅	✅	✅
`SSL_OP_NO_TLSv1_1`	✅	✅	✅
`SSL_OP_NO_TLSv1_2`	✅	✅	✅
`SSL_OP_NO_TLSv1_3`	✅	✅	✅
`SSL_OP_PRIORITIZE_CHACHA`	✅	✅	✅
`SSL_OP_TLS_ROLLBACK_BUG`	✅	✅	✅
`S_IFBLK`	✅	✅	✅
`S_IFCHR`	✅	✅	✅
`S_IFDIR`	✅	✅	✅
`S_IFIFO`	✅	✅	✅
`S_IFLNK`	✅	✅	✅
`S_IFMT`	✅	✅	✅
`S_IFREG`	✅	✅	✅
`S_IFSOCK`	✅	✅	✅
`S_IRGRP`	✅	✅	✅
`S_IROTH`	✅	✅	✅
`S_IRUSR`	✅	✅	✅
`S_IRWXG`	✅	✅	✅
`S_IRWXO`	✅	✅	✅
`S_IRWXU`	✅	✅	✅
`S_IWGRP`	✅	✅	✅
`S_IWOTH`	✅	✅	✅
`S_IWUSR`	✅	✅	✅
`S_IXGRP`	✅	✅	✅
`S_IXOTH`	✅	✅	✅
`S_IXUSR`	✅	✅	✅
`TLS1_1_VERSION`	✅	✅	✅
`TLS1_2_VERSION`	✅	✅	✅
`TLS1_3_VERSION`	✅	✅	✅
`TLS1_VERSION`	✅	✅	✅
`UV_DIRENT_BLOCK`	✅	✅	✅
`UV_DIRENT_CHAR`	✅	✅	✅
`UV_DIRENT_DIR`	✅	✅	✅
`UV_DIRENT_FIFO`	✅	✅	✅
`UV_DIRENT_FILE`	✅	✅	✅
`UV_DIRENT_LINK`	✅	✅	✅
`UV_DIRENT_SOCKET`	✅	✅	✅
`UV_DIRENT_UNKNOWN`	✅	✅	✅
`UV_FS_COPYFILE_EXCL`	✅	✅	✅
`UV_FS_COPYFILE_FICLONE`	✅	✅	✅
`UV_FS_COPYFILE_FICLONE_FORCE`	✅	✅	✅
`UV_FS_O_FILEMAP`	✅	✅	✅
`UV_FS_SYMLINK_DIR`	✅	✅	✅
`UV_FS_SYMLINK_JUNCTION`	✅	✅	✅
`W_OK`	✅	✅	✅
`X_OK`	✅	✅	✅
`defaultCipherList`	❌	✅	✅
`defaultCoreCipherList`	✅	✅	✅

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