{
  "source": "doc/api/deprecations.md",
  "introduced_in": "v7.7.0",
  "miscs": [
    {
      "textRaw": "Deprecated APIs",
      "name": "Deprecated APIs",
      "introduced_in": "v7.7.0",
      "type": "misc",
      "desc": "<p>Node.js may deprecate APIs when either: (a) use of the API is considered to be\nunsafe, (b) an improved alternative API is available, or (c) breaking changes to\nthe API are expected in a future major release.</p>\n<p>Node.js utilizes three kinds of Deprecations:</p>\n<ul>\n<li>Documentation-only</li>\n<li>Runtime</li>\n<li>End-of-Life</li>\n</ul>\n<p>A Documentation-only deprecation is one that is expressed only within the\nNode.js API docs. These generate no side-effects while running Node.js.\nSome Documentation-only deprecations trigger a runtime warning when launched\nwith <a href=\"cli.html#cli_pending_deprecation\"><code>--pending-deprecation</code></a> flag (or its alternative,\n<code>NODE_PENDING_DEPRECATION=1</code> environment variable), similarly to Runtime\ndeprecations below. Documentation-only deprecations that support that flag\nare explicitly labeled as such in the\n<a href=\"#deprecations_list_of_deprecated_apis\">list of Deprecated APIs</a>.</p>\n<p>A Runtime deprecation will, by default, generate a process warning that will\nbe printed to <code>stderr</code> the first time the deprecated API is used. When the\n<code>--throw-deprecation</code> command-line flag is used, a Runtime deprecation will\ncause an error to be thrown.</p>\n<p>An End-of-Life deprecation is used when functionality is or will soon be removed\nfrom Node.js.</p>\n",
      "miscs": [
        {
          "textRaw": "Revoking deprecations",
          "name": "revoking_deprecations",
          "desc": "<p>Occasionally, the deprecation of an API may be reversed. In such situations,\nthis document will be updated with information relevant to the decision.\nHowever, the deprecation identifier will not be modified.</p>\n",
          "type": "misc",
          "displayName": "Revoking deprecations"
        },
        {
          "textRaw": "List of Deprecated APIs",
          "name": "list_of_deprecated_apis",
          "desc": "<p><a id=\"DEP0001\"></a></p>\n",
          "modules": [
            {
              "textRaw": "DEP0001: http.OutgoingMessage.prototype.flush",
              "name": "dep0001:_http.outgoingmessage.prototype.flush",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>OutgoingMessage.prototype.flush()</code> method is deprecated. Use\n<code>OutgoingMessage.prototype.flushHeaders()</code> instead.</p>\n<p><a id=\"DEP0002\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0001: http.OutgoingMessage.prototype.flush"
            },
            {
              "textRaw": "DEP0002: require('\\_linklist')",
              "name": "dep0002:_require('\\_linklist')",
              "desc": "<p>Type: End-of-Life</p>\n<p>The <code>_linklist</code> module is deprecated. Please use a userland alternative.</p>\n<p><a id=\"DEP0003\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0002: require('\\_linklist')"
            },
            {
              "textRaw": "DEP0003: \\_writableState.buffer",
              "name": "dep0003:_\\_writablestate.buffer",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>_writableState.buffer</code> property is deprecated. Use the\n<code>_writableState.getBuffer()</code> method instead.</p>\n<p><a id=\"DEP0004\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0003: \\_writableState.buffer"
            },
            {
              "textRaw": "DEP0004: CryptoStream.prototype.readyState",
              "name": "dep0004:_cryptostream.prototype.readystate",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <code>CryptoStream.prototype.readyState</code> property is deprecated and should not\nbe used.</p>\n<p><a id=\"DEP0005\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0004: CryptoStream.prototype.readyState"
            },
            {
              "textRaw": "DEP0005: Buffer() constructor",
              "name": "dep0005:_buffer()_constructor",
              "desc": "<p>Type: Runtime (supports <a href=\"cli.html#cli_pending_deprecation\"><code>--pending-deprecation</code></a>)</p>\n<p>The <code>Buffer()</code> function and <code>new Buffer()</code> constructor are deprecated due to\nAPI usability issues that can potentially lead to accidental security issues.</p>\n<p>As an alternative, use of the following methods of constructing <code>Buffer</code> objects\nis strongly recommended:</p>\n<ul>\n<li><a href=\"buffer.html#buffer_class_method_buffer_alloc_size_fill_encoding\"><code>Buffer.alloc(size[, fill[, encoding]])</code></a> - Create a <code>Buffer</code> with\n<em>initialized</em> memory.</li>\n<li><a href=\"buffer.html#buffer_class_method_buffer_allocunsafe_size\"><code>Buffer.allocUnsafe(size)</code></a> - Create a <code>Buffer</code> with\n<em>uninitialized</em> memory.</li>\n<li><a href=\"buffer.html#buffer_class_method_buffer_allocunsafeslow_size\"><code>Buffer.allocUnsafeSlow(size)</code></a> - Create a <code>Buffer</code> with <em>uninitialized</em>\n memory.</li>\n<li><a href=\"buffer.html#buffer_class_method_buffer_from_array\"><code>Buffer.from(array)</code></a> - Create a <code>Buffer</code> with a copy of <code>array</code></li>\n<li><a href=\"buffer.html#buffer_class_method_buffer_from_arraybuffer_byteoffset_length\"><code>Buffer.from(arrayBuffer[, byteOffset[, length]])</code></a> -\nCreate a <code>Buffer</code> that wraps the given <code>arrayBuffer</code>.</li>\n<li><a href=\"buffer.html#buffer_class_method_buffer_from_buffer\"><code>Buffer.from(buffer)</code></a> - Create a <code>Buffer</code> that copies <code>buffer</code>.</li>\n<li><a href=\"buffer.html#buffer_class_method_buffer_from_string_encoding\"><code>Buffer.from(string[, encoding])</code></a> - Create a <code>Buffer</code>\nthat copies <code>string</code>.</li>\n</ul>\n<p>As of v10.0.0, a deprecation warning is printed at runtime when\n<code>--pending-deprecation</code> is used or when the calling code is\noutside <code>node_modules</code> in order to better target developers, rather than users.</p>\n<p><a id=\"DEP0006\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0005: Buffer() constructor"
            },
            {
              "textRaw": "DEP0006: child\\_process options.customFds",
              "name": "dep0006:_child\\_process_options.customfds",
              "desc": "<p>Type: Runtime</p>\n<p>Within the <a href=\"child_process.html\"><code>child_process</code></a> module&#39;s <code>spawn()</code>, <code>fork()</code>, and <code>exec()</code>\nmethods, the <code>options.customFds</code> option is deprecated. The <code>options.stdio</code>\noption should be used instead.</p>\n<p><a id=\"DEP0007\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0006: child\\_process options.customFds"
            },
            {
              "textRaw": "DEP0007: Replace cluster worker.suicide with worker.exitedAfterDisconnect",
              "name": "dep0007:_replace_cluster_worker.suicide_with_worker.exitedafterdisconnect",
              "desc": "<p>Type: End-of-Life</p>\n<p>In an earlier version of the Node.js <code>cluster</code>, a boolean property with the name\n<code>suicide</code> was added to the <code>Worker</code> object. The intent of this property was to\nprovide an indication of how and why the <code>Worker</code> instance exited. In Node.js\n6.0.0, the old property was deprecated and replaced with a new\n<a href=\"cluster.html#cluster_worker_exitedafterdisconnect\"><code>worker.exitedAfterDisconnect</code></a> property. The old property name did not\nprecisely describe the actual semantics and was unnecessarily emotion-laden.</p>\n<p><a id=\"DEP0008\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0007: Replace cluster worker.suicide with worker.exitedAfterDisconnect"
            },
            {
              "textRaw": "DEP0008: require('constants')",
              "name": "dep0008:_require('constants')",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <code>constants</code> module is deprecated. When requiring access to constants\nrelevant to specific Node.js builtin modules, developers should instead refer\nto the <code>constants</code> property exposed by the relevant module. For instance,\n<code>require(&#39;fs&#39;).constants</code> and <code>require(&#39;os&#39;).constants</code>.</p>\n<p><a id=\"DEP0009\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0008: require('constants')"
            },
            {
              "textRaw": "DEP0009: crypto.pbkdf2 without digest",
              "name": "dep0009:_crypto.pbkdf2_without_digest",
              "desc": "<p>Type: End-of-Life</p>\n<p>Use of the <a href=\"crypto.html#crypto_crypto_pbkdf2_password_salt_iterations_keylen_digest_callback\"><code>crypto.pbkdf2()</code></a> API without specifying a digest was deprecated\nin Node.js 6.0 because the method defaulted to using the non-recommended\n<code>&#39;SHA1&#39;</code> digest. Previously, a deprecation warning was printed. Starting in\nNode.js 8.0.0, calling <code>crypto.pbkdf2()</code> or <code>crypto.pbkdf2Sync()</code> with an\nundefined <code>digest</code> will throw a <code>TypeError</code>.</p>\n<p><a id=\"DEP0010\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0009: crypto.pbkdf2 without digest"
            },
            {
              "textRaw": "DEP0010: crypto.createCredentials",
              "name": "dep0010:_crypto.createcredentials",
              "desc": "<p>Type: Runtime</p>\n<p>The <a href=\"crypto.html#crypto_crypto_createcredentials_details\"><code>crypto.createCredentials()</code></a> API is deprecated. Please use\n<a href=\"tls.html#tls_tls_createsecurecontext_options\"><code>tls.createSecureContext()</code></a> instead.</p>\n<p><a id=\"DEP0011\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0010: crypto.createCredentials"
            },
            {
              "textRaw": "DEP0011: crypto.Credentials",
              "name": "dep0011:_crypto.credentials",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>crypto.Credentials</code> class is deprecated. Please use <a href=\"tls.html#tls_tls_createsecurecontext_options\"><code>tls.SecureContext</code></a>\ninstead.</p>\n<p><a id=\"DEP0012\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0011: crypto.Credentials"
            },
            {
              "textRaw": "DEP0012: Domain.dispose",
              "name": "dep0012:_domain.dispose",
              "desc": "<p>Type: End-of-Life</p>\n<p><code>Domain.dispose()</code> has been removed. Recover from failed I/O actions\nexplicitly via error event handlers set on the domain instead.</p>\n<p><a id=\"DEP0013\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0012: Domain.dispose"
            },
            {
              "textRaw": "DEP0013: fs asynchronous function without callback",
              "name": "dep0013:_fs_asynchronous_function_without_callback",
              "desc": "<p>Type: End-of-Life</p>\n<p>Calling an asynchronous function without a callback throws a <code>TypeError</code>\nin Node.js 10.0.0 onwards. (See <a href=\"https://github.com/nodejs/node/pull/12562\">https://github.com/nodejs/node/pull/12562</a>.)</p>\n<p><a id=\"DEP0014\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0013: fs asynchronous function without callback"
            },
            {
              "textRaw": "DEP0014: fs.read legacy String interface",
              "name": "dep0014:_fs.read_legacy_string_interface",
              "desc": "<p>Type: End-of-Life</p>\n<p>The <a href=\"fs.html#fs_fs_read_fd_buffer_offset_length_position_callback\"><code>fs.read()</code></a> legacy <code>String</code> interface is deprecated. Use the <code>Buffer</code>\nAPI as mentioned in the documentation instead.</p>\n<p><a id=\"DEP0015\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0014: fs.read legacy String interface"
            },
            {
              "textRaw": "DEP0015: fs.readSync legacy String interface",
              "name": "dep0015:_fs.readsync_legacy_string_interface",
              "desc": "<p>Type: End-of-Life</p>\n<p>The <a href=\"fs.html#fs_fs_readsync_fd_buffer_offset_length_position\"><code>fs.readSync()</code></a> legacy <code>String</code> interface is deprecated. Use the\n<code>Buffer</code> API as mentioned in the documentation instead.</p>\n<p><a id=\"DEP0016\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0015: fs.readSync legacy String interface"
            },
            {
              "textRaw": "DEP0016: GLOBAL/root",
              "name": "dep0016:_global/root",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>GLOBAL</code> and <code>root</code> aliases for the <code>global</code> property have been deprecated\nand should no longer be used.</p>\n<p><a id=\"DEP0017\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0016: GLOBAL/root"
            },
            {
              "textRaw": "DEP0017: Intl.v8BreakIterator",
              "name": "dep0017:_intl.v8breakiterator",
              "desc": "<p>Type: End-of-Life</p>\n<p><code>Intl.v8BreakIterator</code> was a non-standard extension and has been removed.\nSee <a href=\"https://github.com/tc39/proposal-intl-segmenter\"><code>Intl.Segmenter</code></a>.</p>\n<p><a id=\"DEP0018\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0017: Intl.v8BreakIterator"
            },
            {
              "textRaw": "DEP0018: Unhandled promise rejections",
              "name": "dep0018:_unhandled_promise_rejections",
              "desc": "<p>Type: Runtime</p>\n<p>Unhandled promise rejections are deprecated. In the future, promise rejections\nthat are not handled will terminate the Node.js process with a non-zero exit\ncode.</p>\n<p><a id=\"DEP0019\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0018: Unhandled promise rejections"
            },
            {
              "textRaw": "DEP0019: require('.') resolved outside directory",
              "name": "dep0019:_require('.')_resolved_outside_directory",
              "desc": "<p>Type: Runtime</p>\n<p>In certain cases, <code>require(&#39;.&#39;)</code> may resolve outside the package directory.\nThis behavior is deprecated and will be removed in a future major Node.js\nrelease.</p>\n<p><a id=\"DEP0020\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0019: require('.') resolved outside directory"
            },
            {
              "textRaw": "DEP0020: Server.connections",
              "name": "dep0020:_server.connections",
              "desc": "<p>Type: Runtime</p>\n<p>The <a href=\"net.html#net_server_connections\"><code>Server.connections</code></a> property is deprecated. Please use the\n<a href=\"net.html#net_server_getconnections_callback\"><code>Server.getConnections()</code></a> method instead.</p>\n<p><a id=\"DEP0021\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0020: Server.connections"
            },
            {
              "textRaw": "DEP0021: Server.listenFD",
              "name": "dep0021:_server.listenfd",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>Server.listenFD()</code> method is deprecated. Please use\n<a href=\"net.html#net_server_listen_handle_backlog_callback\"><code>Server.listen({fd: &lt;number&gt;})</code></a> instead.</p>\n<p><a id=\"DEP0022\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0021: Server.listenFD"
            },
            {
              "textRaw": "DEP0022: os.tmpDir()",
              "name": "dep0022:_os.tmpdir()",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>os.tmpDir()</code> API is deprecated. Please use <a href=\"os.html#os_os_tmpdir\"><code>os.tmpdir()</code></a> instead.</p>\n<p><a id=\"DEP0023\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0022: os.tmpDir()"
            },
            {
              "textRaw": "DEP0023: os.getNetworkInterfaces()",
              "name": "dep0023:_os.getnetworkinterfaces()",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>os.getNetworkInterfaces()</code> method is deprecated. Please use the\n<a href=\"os.html#os_os_networkinterfaces\"><code>os.networkInterfaces</code></a> property instead.</p>\n<p><a id=\"DEP0024\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0023: os.getNetworkInterfaces()"
            },
            {
              "textRaw": "DEP0024: REPLServer.prototype.convertToContext()",
              "name": "dep0024:_replserver.prototype.converttocontext()",
              "desc": "<p>Type: End-of-Life</p>\n<p>The <code>REPLServer.prototype.convertToContext()</code> API is deprecated and should\nnot be used.</p>\n<p><a id=\"DEP0025\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0024: REPLServer.prototype.convertToContext()"
            },
            {
              "textRaw": "DEP0025: require('sys')",
              "name": "dep0025:_require('sys')",
              "desc": "<p>Type: Runtime</p>\n<p>The <code>sys</code> module is deprecated. Please use the <a href=\"util.html\"><code>util</code></a> module instead.</p>\n<p><a id=\"DEP0026\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0025: require('sys')"
            },
            {
              "textRaw": "DEP0026: util.print()",
              "name": "dep0026:_util.print()",
              "desc": "<p>Type: Runtime</p>\n<p>The <a href=\"util.html#util_util_print_strings\"><code>util.print()</code></a> API is deprecated. Please use <a href=\"console.html#console_console_log_data_args\"><code>console.log()</code></a>\ninstead.</p>\n<p><a id=\"DEP0027\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0026: util.print()"
            },
            {
              "textRaw": "DEP0027: util.puts()",
              "name": "dep0027:_util.puts()",
              "desc": "<p>Type: Runtime</p>\n<p>The <a href=\"util.html#util_util_puts_strings\"><code>util.puts()</code></a> API is deprecated. Please use <a href=\"console.html#console_console_log_data_args\"><code>console.log()</code></a> instead.</p>\n<p><a id=\"DEP0028\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0027: util.puts()"
            },
            {
              "textRaw": "DEP0028: util.debug()",
              "name": "dep0028:_util.debug()",
              "desc": "<p>Type: Runtime</p>\n<p>The <a href=\"util.html#util_util_debug_string\"><code>util.debug()</code></a> API is deprecated. Please use <a href=\"console.html#console_console_error_data_args\"><code>console.error()</code></a>\ninstead.</p>\n<p><a id=\"DEP0029\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0028: util.debug()"
            },
            {
              "textRaw": "DEP0029: util.error()",
              "name": "dep0029:_util.error()",
              "desc": "<p>Type: Runtime</p>\n<p>The <a href=\"util.html#util_util_error_strings\"><code>util.error()</code></a> API is deprecated. Please use <a href=\"console.html#console_console_error_data_args\"><code>console.error()</code></a>\ninstead.</p>\n<p><a id=\"DEP0030\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0029: util.error()"
            },
            {
              "textRaw": "DEP0030: SlowBuffer",
              "name": "dep0030:_slowbuffer",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"buffer.html#buffer_class_slowbuffer\"><code>SlowBuffer</code></a> class is deprecated. Please use\n<a href=\"buffer.html#buffer_class_method_buffer_allocunsafeslow_size\"><code>Buffer.allocUnsafeSlow(size)</code></a> instead.</p>\n<p><a id=\"DEP0031\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0030: SlowBuffer"
            },
            {
              "textRaw": "DEP0031: ecdh.setPublicKey()",
              "name": "dep0031:_ecdh.setpublickey()",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"crypto.html#crypto_ecdh_setpublickey_publickey_encoding\"><code>ecdh.setPublicKey()</code></a> method is now deprecated as its inclusion in the\nAPI is not useful.</p>\n<p><a id=\"DEP0032\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0031: ecdh.setPublicKey()"
            },
            {
              "textRaw": "DEP0032: domain module",
              "name": "dep0032:_domain_module",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"domain.html\"><code>domain</code></a> module is deprecated and should not be used.</p>\n<p><a id=\"DEP0033\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0032: domain module"
            },
            {
              "textRaw": "DEP0033: EventEmitter.listenerCount()",
              "name": "dep0033:_eventemitter.listenercount()",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"events.html#events_eventemitter_listenercount_emitter_eventname\"><code>EventEmitter.listenerCount(emitter, eventName)</code></a> API is\ndeprecated. Please use <a href=\"events.html#events_emitter_listenercount_eventname\"><code>emitter.listenerCount(eventName)</code></a> instead.</p>\n<p><a id=\"DEP0034\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0033: EventEmitter.listenerCount()"
            },
            {
              "textRaw": "DEP0034: fs.exists(path, callback)",
              "name": "dep0034:_fs.exists(path,_callback)",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"fs.html#fs_fs_exists_path_callback\"><code>fs.exists(path, callback)</code></a> API is deprecated. Please use\n<a href=\"fs.html#fs_fs_stat_path_callback\"><code>fs.stat()</code></a> or <a href=\"fs.html#fs_fs_access_path_mode_callback\"><code>fs.access()</code></a> instead.</p>\n<p><a id=\"DEP0035\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0034: fs.exists(path, callback)"
            },
            {
              "textRaw": "DEP0035: fs.lchmod(path, mode, callback)",
              "name": "dep0035:_fs.lchmod(path,_mode,_callback)",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"fs.html#fs_fs_lchmod_path_mode_callback\"><code>fs.lchmod(path, mode, callback)</code></a> API is deprecated.</p>\n<p><a id=\"DEP0036\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0035: fs.lchmod(path, mode, callback)"
            },
            {
              "textRaw": "DEP0036: fs.lchmodSync(path, mode)",
              "name": "dep0036:_fs.lchmodsync(path,_mode)",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"fs.html#fs_fs_lchmodsync_path_mode\"><code>fs.lchmodSync(path, mode)</code></a> API is deprecated.</p>\n<p><a id=\"DEP0037\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0036: fs.lchmodSync(path, mode)"
            },
            {
              "textRaw": "DEP0037: fs.lchown(path, uid, gid, callback)",
              "name": "dep0037:_fs.lchown(path,_uid,_gid,_callback)",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"fs.html#fs_fs_lchown_path_uid_gid_callback\"><code>fs.lchown(path, uid, gid, callback)</code></a> API is deprecated.</p>\n<p><a id=\"DEP0038\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0037: fs.lchown(path, uid, gid, callback)"
            },
            {
              "textRaw": "DEP0038: fs.lchownSync(path, uid, gid)",
              "name": "dep0038:_fs.lchownsync(path,_uid,_gid)",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"fs.html#fs_fs_lchownsync_path_uid_gid\"><code>fs.lchownSync(path, uid, gid)</code></a> API is deprecated.</p>\n<p><a id=\"DEP0039\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0038: fs.lchownSync(path, uid, gid)"
            },
            {
              "textRaw": "DEP0039: require.extensions",
              "name": "dep0039:_require.extensions",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"modules.html#modules_require_extensions\"><code>require.extensions</code></a> property is deprecated.</p>\n<p><a id=\"DEP0040\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0039: require.extensions"
            },
            {
              "textRaw": "DEP0040: punycode module",
              "name": "dep0040:_punycode_module",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"punycode.html\"><code>punycode</code></a> module is deprecated. Please use a userland alternative\ninstead.</p>\n<p><a id=\"DEP0041\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0040: punycode module"
            },
            {
              "textRaw": "DEP0041: NODE\\_REPL\\_HISTORY\\_FILE environment variable",
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              "textRaw": "DEP0085: AsyncHooks Sensitive API",
              "name": "dep0085:_asynchooks_sensitive_api",
              "desc": "<p>Type: End-of-Life</p>\n<p>The AsyncHooks Sensitive API was never documented and had various minor issues.\n(See <a href=\"https://github.com/nodejs/node/issues/15572\">https://github.com/nodejs/node/issues/15572</a>.) Use the <code>AsyncResource</code>\nAPI instead.</p>\n<p><a id=\"DEP0086\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0085: AsyncHooks Sensitive API"
            },
            {
              "textRaw": "DEP0086: Remove runInAsyncIdScope",
              "name": "dep0086:_remove_runinasyncidscope",
              "desc": "<p>Type: End-of-Life</p>\n<p><code>runInAsyncIdScope</code> doesn&#39;t emit the <code>&#39;before&#39;</code> or <code>&#39;after&#39;</code> event and can thus\ncause a lot of issues. See <a href=\"https://github.com/nodejs/node/issues/14328\">https://github.com/nodejs/node/issues/14328</a> for more\ndetails.</p>\n<p><a id=\"DEP0089\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0086: Remove runInAsyncIdScope"
            },
            {
              "textRaw": "DEP0089: require('assert')",
              "name": "dep0089:_require('assert')",
              "desc": "<p>Type: Documentation-only</p>\n<p>Importing assert directly is not recommended as the exposed functions will use\nloose equality checks. Use <code>require(&#39;assert&#39;).strict</code> instead. The API is the\nsame as the legacy assert but it will always use strict equality checks.</p>\n<p><a id=\"DEP0090\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0089: require('assert')"
            },
            {
              "textRaw": "DEP0090: Invalid GCM authentication tag lengths",
              "name": "dep0090:_invalid_gcm_authentication_tag_lengths",
              "desc": "<p>Type: Runtime</p>\n<p>Node.js supports all GCM authentication tag lengths which are accepted by\nOpenSSL when calling <a href=\"crypto.html#crypto_decipher_setauthtag_buffer\"><code>decipher.setAuthTag()</code></a>. This behavior will change in\na future version at which point only authentication tag lengths of 128, 120,\n112, 104, 96, 64, and 32 bits will be allowed. Authentication tags whose length\nis not included in this list will be considered invalid in compliance with\n<a href=\"http://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf\">NIST SP 800-38D</a>.</p>\n<p><a id=\"DEP0091\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0090: Invalid GCM authentication tag lengths"
            },
            {
              "textRaw": "DEP0091: crypto.DEFAULT_ENCODING",
              "name": "dep0091:_crypto.default_encoding",
              "desc": "<p>Type: Runtime</p>\n<p>The <a href=\"crypto.html#crypto_crypto_default_encoding\"><code>crypto.DEFAULT_ENCODING</code></a> property is deprecated.</p>\n<p><a id=\"DEP0092\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0091: crypto.DEFAULT_ENCODING"
            },
            {
              "textRaw": "DEP0092: Top-level `this` bound to `module.exports`",
              "name": "dep0092:_top-level_`this`_bound_to_`module.exports`",
              "desc": "<p>Type: Documentation-only</p>\n<p>Assigning properties to the top-level <code>this</code> as an alternative\nto <code>module.exports</code> is deprecated. Developers should use <code>exports</code>\nor <code>module.exports</code> instead.</p>\n<p><a id=\"DEP0093\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0092: Top-level `this` bound to `module.exports`"
            },
            {
              "textRaw": "DEP0093: crypto.fips is deprecated and replaced.",
              "name": "dep0093:_crypto.fips_is_deprecated_and_replaced.",
              "desc": "<p>Type: Documentation-only</p>\n<p>The <a href=\"crypto.html#crypto_crypto_fips\"><code>crypto.fips</code></a> property is deprecated. Please use <code>crypto.setFips()</code>\nand <code>crypto.getFips()</code> instead.</p>\n<p><a id=\"DEP0094\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0093: crypto.fips is deprecated and replaced."
            },
            {
              "textRaw": "DEP0094: Using `assert.fail()` with more than one argument.",
              "name": "dep0094:_using_`assert.fail()`_with_more_than_one_argument.",
              "desc": "<p>Type: Runtime</p>\n<p>Using <code>assert.fail()</code> with more than one argument is deprecated. Use\n<code>assert.fail()</code> with only one argument or use a different <code>assert</code> module\nmethod.</p>\n<p><a id=\"DEP0095\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0094: Using `assert.fail()` with more than one argument."
            },
            {
              "textRaw": "DEP0095: timers.enroll()",
              "name": "dep0095:_timers.enroll()",
              "desc": "<p>Type: Runtime</p>\n<p><code>timers.enroll()</code> is deprecated. Please use the publicly documented\n<a href=\"timers.html#timers_settimeout_callback_delay_args\"><code>setTimeout()</code></a> or <a href=\"timers.html#timers_setinterval_callback_delay_args\"><code>setInterval()</code></a> instead.</p>\n<p><a id=\"DEP0096\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0095: timers.enroll()"
            },
            {
              "textRaw": "DEP0096: timers.unenroll()",
              "name": "dep0096:_timers.unenroll()",
              "desc": "<p>Type: Runtime</p>\n<p><code>timers.unenroll()</code> is deprecated. Please use the publicly documented\n<a href=\"timers.html#timers_cleartimeout_timeout\"><code>clearTimeout()</code></a> or <a href=\"timers.html#timers_clearinterval_timeout\"><code>clearInterval()</code></a> instead.</p>\n<p><a id=\"DEP0097\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0096: timers.unenroll()"
            },
            {
              "textRaw": "DEP0097: MakeCallback with domain property",
              "name": "dep0097:_makecallback_with_domain_property",
              "desc": "<p>Type: Runtime</p>\n<p>Users of <code>MakeCallback</code> that add the <code>domain</code> property to carry context,\nshould start using the <code>async_context</code> variant of <code>MakeCallback</code> or\n<code>CallbackScope</code>, or the high-level <code>AsyncResource</code> class.</p>\n<p><a id=\"DEP0098\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0097: MakeCallback with domain property"
            },
            {
              "textRaw": "DEP0098: AsyncHooks Embedder AsyncResource.emitBefore and AsyncResource.emitAfter APIs",
              "name": "dep0098:_asynchooks_embedder_asyncresource.emitbefore_and_asyncresource.emitafter_apis",
              "desc": "<p>Type: Runtime</p>\n<p>The embedded API provided by AsyncHooks exposes <code>.emitBefore()</code> and\n<code>.emitAfter()</code> methods which are very easy to use incorrectly which can lead\nto unrecoverable errors.</p>\n<p>Use <a href=\"async_hooks.html#async_hooks_asyncresource_runinasyncscope_fn_thisarg_args\"><code>asyncResource.runInAsyncScope()</code></a> API instead which provides a much\nsafer, and more convenient, alternative. See\n<a href=\"https://github.com/nodejs/node/pull/18513\">https://github.com/nodejs/node/pull/18513</a> for more details.</p>\n<p><a id=\"DEP0099\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0098: AsyncHooks Embedder AsyncResource.emitBefore and AsyncResource.emitAfter APIs"
            },
            {
              "textRaw": "DEP0099: async context-unaware node::MakeCallback C++ APIs",
              "name": "dep0099:_async_context-unaware_node::makecallback_c++_apis",
              "desc": "<p>Type: Compile-time</p>\n<p>Certain versions of <code>node::MakeCallback</code> APIs available to native modules are\ndeprecated. Please use the versions of the API that accept an <code>async_context</code>\nparameter.</p>\n<p><a id=\"DEP0100\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0099: async context-unaware node::MakeCallback C++ APIs"
            },
            {
              "textRaw": "DEP0100: process.assert()",
              "name": "dep0100:_process.assert()",
              "desc": "<p>Type: Runtime</p>\n<p><code>process.assert()</code> is deprecated. Please use the <a href=\"assert.html\"><code>assert</code></a> module instead.</p>\n<p>This was never a documented feature.</p>\n<p><a id=\"DEP0101\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0100: process.assert()"
            },
            {
              "textRaw": "DEP0101: --with-lttng",
              "name": "dep0101:_--with-lttng",
              "desc": "<p>Type: End-of-Life</p>\n<p>The <code>--with-lttng</code> compile-time option has been removed.</p>\n<p><a id=\"DEP0102\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0101: --with-lttng"
            },
            {
              "textRaw": "DEP0102: Using `noAssert` in Buffer#(read|write) operations.",
              "name": "dep0102:_using_`noassert`_in_buffer#(read|write)_operations.",
              "desc": "<p>Type: End-of-Life</p>\n<p>Using the <code>noAssert</code> argument has no functionality anymore. All input is going\nto be verified, no matter if it is set to true or not. Skipping the verification\ncould lead to hard to find errors and crashes.</p>\n<p><a id=\"DEP0103\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0102: Using `noAssert` in Buffer#(read|write) operations."
            },
            {
              "textRaw": "DEP0103: process.binding('util').is[...] typechecks",
              "name": "dep0103:_process.binding('util').is[...]_typechecks",
              "desc": "<p>Type: Documentation-only (supports <a href=\"cli.html#cli_pending_deprecation\"><code>--pending-deprecation</code></a>)</p>\n<p>Using <code>process.binding()</code> in general should be avoided. The type checking\nmethods in particular can be replaced by using <a href=\"util.html#util_util_types\"><code>util.types</code></a>.</p>\n<p><a id=\"DEP0104\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0103: process.binding('util').is[...] typechecks"
            },
            {
              "textRaw": "DEP0104: process.env string coercion",
              "name": "dep0104:_process.env_string_coercion",
              "desc": "<p>Type: Documentation-only (supports <a href=\"cli.html#cli_pending_deprecation\"><code>--pending-deprecation</code></a>)</p>\n<p>When assigning a non-string property to <a href=\"process.html#process_process_env\"><code>process.env</code></a>, the assigned value is\nimplicitly converted to a string. This behavior is deprecated if the assigned\nvalue is not a string, boolean, or number. In the future, such assignment may\nresult in a thrown error. Please convert the property to a string before\nassigning it to <code>process.env</code>.</p>\n<p><a id=\"DEP0105\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0104: process.env string coercion"
            },
            {
              "textRaw": "DEP0105: decipher.finaltol",
              "name": "dep0105:_decipher.finaltol",
              "desc": "<p>Type: Runtime</p>\n<p><code>decipher.finaltol()</code> has never been documented and is currently an alias for\n<a href=\"crypto.html#crypto_decipher_final_outputencoding\"><code>decipher.final()</code></a>. In the future, this API will likely be removed, and it\nis recommended to use <a href=\"crypto.html#crypto_decipher_final_outputencoding\"><code>decipher.final()</code></a> instead.</p>\n<p><a id=\"DEP0106\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0105: decipher.finaltol"
            },
            {
              "textRaw": "DEP0106: crypto.createCipher and crypto.createDecipher",
              "name": "dep0106:_crypto.createcipher_and_crypto.createdecipher",
              "desc": "<p>Type: Documentation-only</p>\n<p>Using <a href=\"crypto.html#crypto_crypto_createcipher_algorithm_password_options\"><code>crypto.createCipher()</code></a> and <a href=\"crypto.html#crypto_crypto_createdecipher_algorithm_password_options\"><code>crypto.createDecipher()</code></a> should be\navoided as they use a weak key derivation function (MD5 with no salt) and static\ninitialization vectors. It is recommended to derive a key using\n<a href=\"crypto.html#crypto_crypto_pbkdf2_password_salt_iterations_keylen_digest_callback\"><code>crypto.pbkdf2()</code></a> and to use <a href=\"crypto.html#crypto_crypto_createcipheriv_algorithm_key_iv_options\"><code>crypto.createCipheriv()</code></a> and\n<a href=\"crypto.html#crypto_crypto_createdecipheriv_algorithm_key_iv_options\"><code>crypto.createDecipheriv()</code></a> to obtain the <a href=\"crypto.html#crypto_class_cipher\"><code>Cipher</code></a> and <a href=\"crypto.html#crypto_class_decipher\"><code>Decipher</code></a>\nobjects respectively.</p>\n<p><a id=\"DEP0107\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0106: crypto.createCipher and crypto.createDecipher"
            },
            {
              "textRaw": "DEP0107: tls.convertNPNProtocols()",
              "name": "dep0107:_tls.convertnpnprotocols()",
              "desc": "<p>Type: Runtime</p>\n<p>This was an undocumented helper function not intended for use outside Node.js\ncore and obsoleted by the removal of NPN (Next Protocol Negotiation) support.</p>\n<p><a id=\"DEP0108\"></a></p>\n",
              "type": "module",
              "displayName": "DEP0107: tls.convertNPNProtocols()"
            },
            {
              "textRaw": "DEP0108: zlib.bytesRead",
              "name": "dep0108:_zlib.bytesread",
              "desc": "<p>Type: Documentation-only</p>\n<p>Deprecated alias for <a href=\"zlib.html#zlib_zlib_byteswritten\"><code>zlib.bytesWritten</code></a>. This original name was chosen\nbecause it also made sense to interpret the value as the number of bytes\nread by the engine, but is inconsistent with other streams in Node.js that\nexpose values under these names.</p>\n",
              "type": "module",
              "displayName": "DEP0108: zlib.bytesRead"
            }
          ],
          "type": "misc",
          "displayName": "List of Deprecated APIs"
        }
      ]
    }
  ]
}