Deno v0.42.0 — Release Notes & Engineering Impact

### Changes - BREAKING: "address" renamed to "path" in UnixAddr/UnixConnectOptions/UnixListenOptions (#4959) - BREAKING: Change DirEntry to not require extra stat syscall (#4941) - BREAKING: Change order of args in Deno.copy() (#4885) - BREAKING: Change order of copyN arguments (#4900) - BREAKING: Change return type of Deno.resources() (#4893) - BREAKING: Deno.chdir() should require --allow-write (#4889) - BREAKING: Factor out Deno.listenDatagram(), mark as unstable (#4968) - BREAKING: Make shutdown unstable and async (#4940) - BREAKING: Make unix sockets require allow-write (#4939) - BREAKING: Map-like interface for Deno.env (#4942) - BREAKING: Mark --importmap as unstable (#4934) - BREAKING: Mark Deno.dir() unstable (#4924) - BREAKING: Mark Deno.kill() as unstable (#4950) - BREAKING: Mark Deno.loadavg() and osRelease() as unstable (#4938) - BREAKING: Mark Deno.setRaw() as unstable (#4925) - BREAKING: Mark Deno.umask() unstable (#4935) - BREAKING: Mark Deno.utime() as unstable (#4955) - BREAKING: Mark runtime compile ops as unstable (#4912) - BREAKING: Mark signal APIs as unstable (#4926) - BREAKING: Remove Conn.closeRead (#4970) - BREAKING: Remove Deno.EOF, use null instead (#4953) - BREAKING: Remove Deno.OpenMode (#4884) - BREAKING: Remove Deno.runTests() API (#4922) - BREAKING: Remove Deno.symbols namespace (#4936) - BREAKING: Remove combined io interface like ReadCloser (#4944) - BREAKING: Remove overload of Deno.test() taking named function (#4951) - BREAKING: Rename Deno.fsEvents() to Deno.watchFs() (#4886) - BREAKING: Rename Deno.toAsyncIterator() to Deno.iter() (#4848) - BREAKING: Rename FileInfo time fields and represent them as Date objects (#4932) - BREAKING: Rename SeekMode variants to camelCase and stabilize (#4946) - BREAKING: Rename TLS APIs to camel case (#4888) - BREAKING: Use LLVM target triple for Deno.build (#4948) - BREAKING: introduce unstable flag; mark Deno.openPlugin, link, linkSync, symlink, symlinkSync as unstable (#4892) - BREAKING: make camel case readDir, readLink, realPath (#4995) - BREAKING: remove custom implementation of Deno.Buffer.toString() (#4992) - BREAKING: std/node: require\_ -> require (#4828) - feat(fmt): parallelize formatting (#4823) - feat(installer): Add DENO_INSTALL_ROOT (#4787) - feat(std/http): Improve parseHTTPVersion (#4930) - feat(std/io): Increase copyN buffer size to match go implementation (#4904) - feat(std/io): synchronous buffered writer (#4693) - feat(std/path): Add fromFileUrl() (#4993) - feat(std/uuid): Implement uuid v5 (#4916) - feat(test): add quiet flag (#4894) - feat: Add Deno.readTextFile(), Deno.writeTextFile(), with sync counterparts (#4901) - feat: Add buffer size argument to copy (#4907) - feat: Add close method to Plugin (#4670) (#4785) - feat: Change URL.port implementation to match WHATWG specifications (#4954) - feat: Deno.startTLS() (#4773, #4965) - feat: Make zero a valid port for URL (#4963) - feat: add help messages to Deno.test() sanitizers (#4887) - feat: support Deno namespace in Worker API (#4784) - fix(core): Op definitions (#4814) - fix(core): fix top-level-await error handling (#4911) - fix(core/js_errors): Get error's name and message from JS fields (#4808) - fix(format): stdin not formatting JSX (#4971) - fix(installer): handle case-insensitive uri (#4909) - fix(std): existsFile test - fix(std/fs): move dest if not exists and overwrite (#4910) - fix(std/io): Make std/io copyN write the whole read buffer (#4978) - fix(std/mime): MultipartReader for big files (#4865) - fix(std/node): bug fix and tests fs/mkdir (#4917) - fix: bug in Deno.copy (#4977) - fix: don't throw RangeError when an invalid date is passed (#4929) - fix: make URLSearchParams more standardized (#4695) - refactor(cli): Improve source line formatting (#4832) - refactor(cli): Move resource_table from deno::State to deno_core::Isolate (#4834) - refactor(cli): Remove bootstrap methods from global scope after bootstrapping (#4869) - refactor(cli/doc): Factor out AstParser from DocParser (#4923) - refactor(cli/inspector): Store debugger url on DenoInspector (#4793) - refactor(cli/js): Rewrite streams (#4842) - refactor(cli/js/io): Change type of stdio handles in JS api (#4891, #4952) - refactor(cli/js/io): Rename sync io interfaces (#4945) - refactor(cli/js/net): Deno.listener closes when breaking out of async iterator (#4976) - refactor(cli/js/permissions): Split read and write permission descriptors (#4774) - refactor(cli/js/testing): Rename disableOpSanitizer to sanitizeOps (#4854) - refactor(cli/js/web): Change InspectOptions, mark Deno.inspect as stable (#4967) - refactor(cli/js/web): Decouple Console implementation from stdout (#4899) - refactor(cli/ops): Replace block_on in net interfaces (#4796) - refactor(cli|std): Add no-async-promise-executor lint rule (#4809) - refactor(core): Modify op dispatcher to include &mut Isolate argument (#4821) - refactor(core): Remove core/plugin.rs (#4824) - refactor(core): Rename deno_core::Isolate to deno_core::CoreIsolate (#4851) - refactor(core): add id field to RecursiveModuleLoad (#4905) - refactor(std/log): support enum log level (#4859) - refactor(std/node): proper Node polyfill directory iteration (#4783) - upgrade: Rust 1.43.0 (#4871) - upgrade: dprint 0.13.0 (#4816) - upgrade: dprint 0.13.1 (#4853) - upgrade: rusty_v8 v0.4.0 (#4856) - chore: Mark Deno.Metrics and Deno.RunOptions as stable (#4949) ### Install / Upgrade **Using Deno:** ```sh deno upgrade ``` **With Shell:** ```sh curl -fsSL https://deno.land/x/install/install.sh | sh -s v0.42.0 ``` **With PowerShell:** ```powershell iwr https://deno.land/x/install/install.ps1 -useb -outf install.ps1; .\install.ps1 v0.42.0 ```