Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

25 files changed, 1881 insertions, 0 deletions

diff --git a/comm/tools/esmify/mach_commands.py b/comm/tools/esmify/mach_commands.py
new file mode 100644
index 0000000000..fb02f4982e
--- /dev/null
+++ b/comm/tools/esmify/mach_commands.py
@@ -0,0 +1,705 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import logging
+import os
+import pathlib
+import re
+import subprocess
+import sys
+
+from mach.decorators import Command, CommandArgument
+
+
+def path_sep_to_native(path_str):
+    """Make separators in the path OS native."""
+    return pathlib.os.sep.join(path_str.split("/"))
+
+
+def path_sep_from_native(path):
+    """Make separators in the path OS native."""
+    return "/".join(str(path).split(pathlib.os.sep))
+
+
+excluded_from_convert_prefix = list(
+    map(
+        path_sep_to_native,
+        [
+            # Don't modify suite/ code"
+            "suite/",
+        ],
+    )
+)
+
+
+def is_excluded_from_convert(path):
+    """Returns true if the JSM file shouldn't be converted to ESM."""
+    path_str = str(path)
+    for prefix in excluded_from_convert_prefix:
+        if path_str.startswith(prefix):
+            return True
+
+    return False
+
+
+excluded_from_imports_prefix = list(
+    map(
+        path_sep_to_native,
+        [
+            # Vendored or auto-generated files.
+            "chat/protocols/matrix/lib/",
+            "chat/protocols/xmpp/lib/",
+            # Files has macro.
+            "calendar/base/calendar.js",
+            "chat/chat-prefs.js",
+            "mail/app/profile/all-thunderbird.js",
+            "mail/branding/thunderbird/pref/thunderbird-branding.js",
+            "mail/components/compose/composer.js",
+            "mail/components/enterprisepolicies/schemas/schema.sys.mjs",
+            "mail/locales/en-US/all-l10n.js",
+            "mail/extensions/am-e2e/prefs/e2e-prefs.js",
+            "mailnews/extensions/mdn/mdn.js",
+            "mailnews/mailnews.js",
+        ],
+    )
+)
+
+EXCLUSION_FILES = [
+    os.path.join("tools", "lint", "ThirdPartyPaths.txt"),
+]
+
+MAP_JSON = os.path.abspath(os.path.join("tools", "esmify", "map.json"))
+
+
+def load_exclusion_files():
+    for path in EXCLUSION_FILES:
+        with open(path, "r") as f:
+            for line in f:
+                p = path_sep_to_native(re.sub("\*$", "", line.strip()))
+                excluded_from_imports_prefix.append(p)
+
+
+def is_excluded_from_imports(path):
+    """Returns true if the JS file content shouldn't be handled by
+    jscodeshift.
+
+    This filter is necessary because jscodeshift cannot handle some
+    syntax edge cases and results in unexpected rewrite."""
+    path_str = str(path)
+    for prefix in excluded_from_imports_prefix:
+        if path_str.startswith(prefix):
+            return True
+
+    return False
+
+
+# Wrapper for hg/git operations
+class VCSUtils:
+    def run(self, cmd):
+        # Do not pass check=True because the pattern can match no file.
+        lines = subprocess.run(cmd, stdout=subprocess.PIPE).stdout.decode()
+        return filter(lambda x: x != "", lines.split("\n"))
+
+
+class HgUtils(VCSUtils):
+    def is_available():
+        return pathlib.Path(".hg").exists()
+
+    def rename(self, before, after):
+        cmd = ["hg", "rename", before, after]
+        subprocess.run(cmd, check=True)
+
+    def find_jsms(self, path):
+        jsms = []
+
+        cmd = ["hg", "files", f"set:glob:{path}/**/*.jsm"]
+        for line in self.run(cmd):
+            jsm = pathlib.Path(line)
+            if is_excluded_from_convert(jsm):
+                continue
+            jsms.append(jsm)
+
+        cmd = [
+            "hg",
+            "files",
+            f"set:grep('EXPORTED_SYMBOLS = \[') and glob:{path}/**/*.js",
+        ]
+        for line in self.run(cmd):
+            jsm = pathlib.Path(line)
+            if is_excluded_from_convert(jsm):
+                continue
+            jsms.append(jsm)
+
+        return jsms
+
+    def find_all_jss(self, path):
+        jss = []
+
+        cmd = ["hg", "files", f"set:glob:{path}/**/*.jsm"]
+        for line in self.run(cmd):
+            js = pathlib.Path(line)
+            if is_excluded_from_imports(js) or is_excluded_from_convert(js):
+                continue
+            jss.append(js)
+
+        cmd = ["hg", "files", f"set:glob:{path}/**/*.js"]
+        for line in self.run(cmd):
+            js = pathlib.Path(line)
+            if is_excluded_from_imports(js) or is_excluded_from_convert(js):
+                continue
+            jss.append(js)
+
+        cmd = ["hg", "files", f"set:glob:{path}/**/*.mjs"]
+        for line in self.run(cmd):
+            js = pathlib.Path(line)
+            if is_excluded_from_imports(js) or is_excluded_from_convert(js):
+                continue
+            jss.append(js)
+
+        return jss
+
+
+class Summary:
+    def __init__(self):
+        self.convert_errors = []
+        self.import_errors = []
+        self.rename_errors = []
+        self.no_refs = []
+
+
+@Command(
+    "tb-esmify",
+    category="thunderbird",
+    description="ESMify JSM files (comm-central variant)",
+)
+@CommandArgument(
+    "path",
+    nargs=1,
+    help="Path to the JSM file to ESMify, or the directory that contains "
+    "JSM files and/or JS files that imports ESM-ified JSM. This path is relative"
+    "to your current directory, $topsrcdir/comm",
+)
+@CommandArgument(
+    "--convert",
+    action="store_true",
+    help="Only perform the step 1 = convert part",
+)
+@CommandArgument(
+    "--imports",
+    action="store_true",
+    help="Only perform the step 2 = import calls part",
+)
+@CommandArgument(
+    "--upstream-imports",
+    action="store_true",
+    help="Perform step 2, import calls, but for converted JSMs in mozilla-central",
+)
+@CommandArgument(
+    "--prefix",
+    default="",
+    help="Restrict the target of import in the step 2 to ESM-ified JSM, by the "
+    "prefix match for the JSM file's path.  This path is relative to $topsrcdir, "
+    "not your current directory. e.g. --prefix=comm/mail/ or --prefix=toolkit/",
+)
+def tb_esmify(
+    command_context,
+    path=None,
+    convert=False,
+    imports=False,
+    upstream_imports=False,
+    prefix="",
+):
+    """
+    This command does the following 2 steps:
+      1. Convert the JSM file specified by `path` to ESM file, or the JSM files
+         inside the directory specified by `path` to ESM files, and also
+         fix references in build files and test definitions
+      2. Convert import calls inside file(s) specified by `path` for ESM-ified
+         files to use new APIs
+
+    Note: When performing import rewrites, when using --imports for comm-central
+      modules, you will see "Unknown module" WARNING messages referring to modules
+      from mozilla-central.
+      When using --upstream-imports for migrated modules from mozilla-central,
+      you will see "Unknown module" WARNINGs referring to modules from
+      comm-central. This is expected, and not a problem.
+
+    Example 1:
+      # Convert all JSM files inside `mail/components/customizableui` directory,
+      # and replace all references for ESM-ified files in the entire tree to use
+      # new APIs
+
+      $ ../mach tb-esmify --convert mail/components/customizableui
+      $ ../mach tb-esmify --imports . --prefix=comm/mail/components/customizableui
+
+    Example 2:
+      # Convert all JSM files inside `mail` directory, and replace all
+      # references for the JSM files inside `mail` directory to use
+      # new APIs
+
+      $ ../mach tb-esmify mail
+
+    Example 3:
+      # Replace references for ESM-ified files from toolkit/ in calendar/
+
+      $ ../mach tb-esmify --upstream-imports --prefix=toolkit/ calendar/
+    """
+
+    def error(text):
+        command_context.log(logging.ERROR, "tb-esmify", {}, f"[ERROR] {text}")
+
+    def warn(text):
+        command_context.log(logging.WARN, "tb-esmify", {}, f"[WARN] {text}")
+
+    def info(text):
+        command_context.log(logging.INFO, "tb-esmify", {}, f"[INFO] {text}")
+
+    if upstream_imports:
+        imports = True
+        assert not convert, "Cannot use --convert with --upstream-imports"
+
+    # If no options is specified, perform both.
+    if not convert and not imports:
+        convert = True
+        imports = True
+
+    path = pathlib.Path(path[0])
+
+    if not verify_path(command_context, path):
+        return 1
+
+    if HgUtils.is_available():
+        vcs_utils = HgUtils()
+    else:
+        error(
+            "This script needs to be run inside mozilla-central + comm-central "
+            "checkout of mercurial. "
+        )
+        return 1
+
+    load_exclusion_files()
+
+    info("Setting up jscodeshift...")
+    setup_jscodeshift()
+
+    is_single_file = path.is_file()
+
+    modified_files = []
+    summary = Summary()
+
+    if convert:
+        info("Searching files to convert to ESM...")
+        if is_single_file:
+            jsms = [path]
+        else:
+            jsms = vcs_utils.find_jsms(path)
+
+        info(f"Found {len(jsms)} file(s) to convert to ESM.")
+
+        info("Converting to ESM...")
+        jsms = convert_module(jsms, summary)
+        if jsms is None:
+            error("Failed to rewrite exports.")
+            return 1
+
+        info("Renaming...")
+        esms = rename_jsms(command_context, vcs_utils, jsms, summary)
+
+        modified_files += esms
+
+    if imports:
+        info("Searching files to rewrite imports...")
+
+        if is_single_file:
+            if convert:
+                # Already converted above
+                jss = esms
+            else:
+                jss = [path]
+        else:
+            jss = vcs_utils.find_all_jss(path)
+
+        info(f"Found {len(jss)} file(s). Rewriting imports...")
+
+        result = rewrite_imports(jss, prefix, summary, upstream_imports)
+        if result is None:
+            return 1
+
+        info(f"Rewritten {len(result)} file(s).")
+
+        # Only modified files needs eslint fix
+        modified_files += result
+
+    modified_files = list(set(modified_files))
+
+    info(f"Applying eslint --fix for {len(modified_files)} file(s)...")
+    eslint_fix(command_context, modified_files)
+
+    def print_files(f, errors):
+        for [path, message] in errors:
+            f(f"  * {path}")
+            if message:
+                f(f"    {message}")
+
+    if len(summary.convert_errors):
+        error("========")
+        error("Following files are not converted into ESM due to error:")
+        print_files(error, summary.convert_errors)
+
+    if len(summary.import_errors):
+        warn("========")
+        warn("Following files are not rewritten to import ESMs due to error:")
+        warn(
+            "(NOTE: Errors related to 'private names' are mostly due to "
+            " preprocessor macros in the file):"
+        )
+        print_files(warn, summary.import_errors)
+
+    if len(summary.rename_errors):
+        error("========")
+        error("Following files are not renamed due to error:")
+        print_files(error, summary.rename_errors)
+
+    if len(summary.no_refs):
+        warn("========")
+        warn("Following files are not found in any build files.")
+        warn("Please update references to those files manually:")
+        print_files(warn, summary.rename_errors)
+
+    return 0
+
+
+def verify_path(command_context, path):
+    """Check if the path passed to the command is valid relative path."""
+
+    def error(text):
+        command_context.log(logging.ERROR, "tb-esmify", {}, f"[ERROR] {text}")
+
+    if not path.exists():
+        error(f"{path} does not exist.")
+        return False
+
+    if path.is_absolute():
+        error("Path must be a relative path from comm-central checkout.")
+        return False
+
+    return True
+
+
+def find_file(path, target):
+    """Find `target` file in ancestor of path."""
+    target_path = path.parent / target
+    if not target_path.exists():
+        if path.parent == path:
+            return None
+
+        return find_file(path.parent, target)
+
+    return target_path
+
+
+def try_rename_in(command_context, path, target, jsm_name, esm_name, jsm_path):
+    """Replace the occurrences of `jsm_name` with `esm_name` in `target`
+    file."""
+
+    def info(text):
+        command_context.log(logging.INFO, "tb-esmify", {}, f"[INFO] {text}")
+
+    target_path = find_file(path, target)
+    if not target_path:
+        return False
+
+    # Single moz.build or jar.mn can contain multiple files with same name.
+    # Check the relative path.
+
+    jsm_relative_path = jsm_path.relative_to(target_path.parent)
+    jsm_relative_str = path_sep_from_native(str(jsm_relative_path))
+
+    jsm_name_re = re.compile(r"\b" + jsm_name.replace(".", r"\.") + r"\b")
+    jsm_relative_re = re.compile(r"\b" + jsm_relative_str.replace(".", r"\.") + r"\b")
+
+    modified = False
+    content = ""
+    with open(target_path, "r") as f:
+        for line in f:
+            if jsm_relative_re.search(line):
+                modified = True
+                line = jsm_name_re.sub(esm_name, line)
+
+            content += line
+
+    if modified:
+        info(f"  {str(target_path)}")
+        info(f"    {jsm_name} => {esm_name}")
+        with open(target_path, "w", newline="\n") as f:
+            f.write(content)
+
+    return True
+
+
+def try_rename_components_conf(command_context, path, jsm_name, esm_name):
+    """Replace the occurrences of `jsm_name` with `esm_name` in components.conf
+    file."""
+
+    def info(text):
+        command_context.log(logging.INFO, "tb-esmify", {}, f"[INFO] {text}")
+
+    target_path = find_file(path, "components.conf")
+    if not target_path:
+        return False
+
+    # Unlike try_rename_in, components.conf contains the URL instead of
+    # relative path, and also there are no known files with same name.
+    # Simply replace the filename.
+
+    with open(target_path, "r") as f:
+        content = f.read()
+
+    prop_re = re.compile("[\"']jsm[\"']:(.*)" + r"\b" + jsm_name.replace(".", r"\.") + r"\b")
+
+    if not prop_re.search(content):
+        return False
+
+    info(f"  {str(target_path)}")
+    info(f"    {jsm_name} => {esm_name}")
+
+    content = prop_re.sub(r"'esModule':\1" + esm_name, content)
+    with open(target_path, "w", newline="\n") as f:
+        f.write(content)
+
+    return True
+
+
+def esmify_name(name):
+    return re.sub(r"\.(jsm|js|jsm\.js)$", ".sys.mjs", name)
+
+
+def esmify_path(jsm_path):
+    jsm_name = jsm_path.name
+    esm_name = re.sub(r"\.(jsm|js|jsm\.js)$", ".sys.mjs", jsm_name)
+    esm_path = jsm_path.parent / esm_name
+    return esm_path
+
+
+def rename_single_file(command_context, vcs_utils, jsm_path, summary):
+    """Rename `jsm_path` to .sys.mjs, and fix references to the file in build and
+    test definitions."""
+
+    def info(text):
+        command_context.log(logging.INFO, "tb-esmify", {}, f"[INFO] {text}")
+
+    esm_path = esmify_path(jsm_path)
+
+    jsm_name = jsm_path.name
+    esm_name = esm_path.name
+
+    target_files = [
+        "moz.build",
+        "jar.mn",
+        "browser.ini",
+        "browser-drawBelowTitlebar.ini",
+        "browser-detachedWindows.ini",
+        "browser-drawInTitlebar.ini",
+        "browser-clear.ini",
+        "browser_rotated.ini",
+        "xpcshell.ini",
+        "xpcshell_cardDAV.ini",
+        "xpcshell-cpp.ini",
+        "xpcshell-imap.ini",
+        "xpcshell-local.ini",
+        "xpcshell_maildir-cpp.ini",
+        "xpcshell_maildir.ini",
+        "xpcshell-nntp.ini",
+        "xpcshell-shared.ini",
+    ]
+
+    info(f"{jsm_path} => {esm_path}")
+
+    renamed = False
+    for target in target_files:
+        if try_rename_in(command_context, jsm_path, target, jsm_name, esm_name, jsm_path):
+            renamed = True
+
+    if try_rename_components_conf(command_context, jsm_path, jsm_name, esm_name):
+        renamed = True
+
+    if not renamed:
+        summary.no_refs.append([jsm_path, None])
+
+    if not esm_path.exists():
+        vcs_utils.rename(jsm_path, esm_path)
+    else:
+        summary.rename_errors.append([jsm_path, f"{esm_path} already exists"])
+
+    return esm_path
+
+
+def rename_jsms(command_context, vcs_utils, jsms, summary):
+    esms = []
+    for jsm in jsms:
+        esm = rename_single_file(command_context, vcs_utils, jsm, summary)
+        esms.append(esm)
+
+    return esms
+
+
+npm_prefix = pathlib.Path("..") / "tools" / "esmify"
+path_from_npm_prefix = pathlib.Path("..") / ".." / "comm"
+
+
+def setup_jscodeshift():
+    """Install jscodeshift."""
+    cmd = [
+        sys.executable,
+        "../mach",
+        "npm",
+        "install",
+        "jscodeshift",
+        "--save-dev",
+        "--prefix",
+        str(npm_prefix),
+    ]
+    subprocess.run(cmd, check=True)
+
+
+def run_npm_command(args, env, stdin):
+    cmd = [
+        sys.executable,
+        "../mach",
+        "npm",
+        "run",
+    ] + args
+    p = subprocess.Popen(cmd, env=env, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+    p.stdin.write(stdin)
+    p.stdin.close()
+
+    ok_files = []
+    errors = []
+    while True:
+        line = p.stdout.readline()
+        if not line:
+            break
+        line = line.rstrip().decode()
+
+        if line.startswith(" NOC "):
+            continue
+
+        print(line)
+
+        m = re.search(r"^ (OKK|ERR) ([^ ]+)(?: (.+))?", line)
+        if not m:
+            continue
+
+        result = m.group(1)
+        # NOTE: path is written from `tools/esmify`.
+        path = pathlib.Path(m.group(2)).relative_to(path_from_npm_prefix)
+        error = m.group(3)
+
+        if result == "OKK":
+            ok_files.append(path)
+
+        if result == "ERR":
+            errors.append([path, error])
+
+    if p.wait() != 0:
+        return [None, None]
+
+    return ok_files, errors
+
+
+def convert_module(jsms, summary):
+    """Replace EXPORTED_SYMBOLS with export declarations, and replace
+    ChromeUtils.importESModule with static import as much as possible,
+    and return the list of successfully rewritten files."""
+
+    if len(jsms) == 0:
+        return []
+
+    env = os.environ.copy()
+    env["ESMIFY_MAP_JSON"] = MAP_JSON
+
+    stdin = "\n".join(map(str, paths_from_npm_prefix(jsms))).encode()
+
+    ok_files, errors = run_npm_command(
+        [
+            "convert_module",
+            "--prefix",
+            str(npm_prefix),
+        ],
+        env=env,
+        stdin=stdin,
+    )
+
+    if ok_files is None and errors is None:
+        return None
+
+    summary.convert_errors.extend(errors)
+
+    return ok_files
+
+
+def rewrite_imports(jss, prefix, summary, upstream_imports=False):
+    """Replace import calls for JSM with import calls for ESM or static import
+    for ESM."""
+
+    if len(jss) == 0:
+        return []
+
+    env = os.environ.copy()
+    if not upstream_imports:
+        env["ESMIFY_MAP_JSON"] = MAP_JSON
+    env["ESMIFY_TARGET_PREFIX"] = prefix
+
+    stdin = "\n".join(map(str, paths_from_npm_prefix(jss))).encode()
+
+    ok_files, errors = run_npm_command(
+        [
+            "rewrite_imports",
+            "--prefix",
+            str(npm_prefix),
+        ],
+        env=env,
+        stdin=stdin,
+    )
+
+    if ok_files is None and errors is None:
+        return None
+
+    summary.import_errors.extend(errors)
+
+    return ok_files
+
+
+def paths_from_npm_prefix(paths):
+    """Convert relative path from mozilla-central to relative path from
+    tools/esmify."""
+    return list(map(lambda path: path_from_npm_prefix / path, paths))
+
+
+def eslint_fix(command_context, files):
+    """Auto format files."""
+
+    def info(text):
+        command_context.log(logging.INFO, "tb-esmify", {}, f"[INFO] {text}")
+
+    if len(files) == 0:
+        return
+
+    remaining = files[0:]
+
+    # There can be too many files for single command line, perform by chunk.
+    max_files = 16
+    while len(remaining) > max_files:
+        info(f"{len(remaining)} files remaining")
+
+        chunk = remaining[0:max_files]
+        remaining = remaining[max_files:]
+
+        cmd = [sys.executable, "../mach", "eslint", "--fix"] + chunk
+        subprocess.run(cmd, check=True)
+
+    info(f"{len(remaining)} files remaining")
+    chunk = remaining
+    cmd = [sys.executable, "../mach", "eslint", "--fix"] + chunk
+    subprocess.run(cmd, check=True)
diff --git a/comm/tools/esmify/map.json b/comm/tools/esmify/map.json
new file mode 100644
index 0000000000..820ad29b12
--- /dev/null
+++ b/comm/tools/esmify/map.json
@@ -0,0 +1,482 @@
+{
+  "chrome://openpgp/content/BondOpenPGP.jsm": "comm/mail/extensions/openpgp/content/BondOpenPGP.jsm",
+  "chrome://openpgp/content/modules/CollectedKeysDB.jsm": "comm/mail/extensions/openpgp/content/modules/CollectedKeysDB.jsm",
+  "chrome://openpgp/content/modules/GPGME.jsm": "comm/mail/extensions/openpgp/content/modules/GPGME.jsm",
+  "chrome://openpgp/content/modules/GPGMELib.jsm": "comm/mail/extensions/openpgp/content/modules/GPGMELib.jsm",
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+  "resource://testing-common/mailnews/MessageInjection.jsm": "comm/mailnews/test/resources/MessageInjection.jsm",
+  "resource://testing-common/mailnews/NetworkTestUtils.jsm": "comm/mailnews/test/resources/NetworkTestUtils.jsm",
+  "resource://testing-common/mailnews/Nntpd.jsm": "comm/mailnews/test/fakeserver/Nntpd.jsm",
+  "resource://testing-common/mailnews/Pop3d.jsm": "comm/mailnews/test/fakeserver/Pop3d.jsm",
+  "resource://testing-common/mailnews/Smtpd.jsm": "comm/mailnews/test/fakeserver/Smtpd.jsm",
+  "resource://testing-common/mailnews/smimeUtils.jsm": "comm/mailnews/test/resources/smimeUtils.jsm",
+  "resource://testing-common/mailnews/testJaBaseIncomingServer.jsm": "comm/mailnews/jsaccount/test/unit/resources/testJaBaseIncomingServer.jsm",
+  "resource://testing-common/mailnews/testJaBaseMsgFolder.jsm": "comm/mailnews/jsaccount/test/unit/resources/testJaBaseMsgFolder.jsm",
+  "resource://testing-common/mozmill/AccountManagerHelpers.jsm": "comm/mail/test/browser/shared-modules/AccountManagerHelpers.jsm",
+  "resource://testing-common/mozmill/AddressBookHelpers.jsm": "comm/mail/test/browser/shared-modules/AddressBookHelpers.jsm",
+  "resource://testing-common/mozmill/AttachmentHelpers.jsm": "comm/mail/test/browser/shared-modules/AttachmentHelpers.jsm",
+  "resource://testing-common/mozmill/CloudfileHelpers.jsm": "comm/mail/test/browser/shared-modules/CloudfileHelpers.jsm",
+  "resource://testing-common/mozmill/ComposeHelpers.jsm": "comm/mail/test/browser/shared-modules/ComposeHelpers.jsm",
+  "resource://testing-common/mozmill/ContentTabHelpers.jsm": "comm/mail/test/browser/shared-modules/ContentTabHelpers.jsm",
+  "resource://testing-common/mozmill/CustomizationHelpers.jsm": "comm/mail/test/browser/shared-modules/CustomizationHelpers.jsm",
+  "resource://testing-common/mozmill/DOMHelpers.jsm": "comm/mail/test/browser/shared-modules/DOMHelpers.jsm",
+  "resource://testing-common/mozmill/EventUtils.jsm": "comm/mail/test/browser/shared-modules/EventUtils.jsm",
+  "resource://testing-common/mozmill/FolderDisplayHelpers.jsm": "comm/mail/test/browser/shared-modules/FolderDisplayHelpers.jsm",
+  "resource://testing-common/mozmill/JunkHelpers.jsm": "comm/mail/test/browser/shared-modules/JunkHelpers.jsm",
+  "resource://testing-common/mozmill/KeyboardHelpers.jsm": "comm/mail/test/browser/shared-modules/KeyboardHelpers.jsm",
+  "resource://testing-common/mozmill/MockObjectHelpers.jsm": "comm/mail/test/browser/shared-modules/MockObjectHelpers.jsm",
+  "resource://testing-common/mozmill/MouseEventHelpers.jsm": "comm/mail/test/browser/shared-modules/MouseEventHelpers.jsm",
+  "resource://testing-common/mozmill/NNTPHelpers.jsm": "comm/mail/test/browser/shared-modules/NNTPHelpers.jsm",
+  "resource://testing-common/mozmill/NewMailAccountHelpers.jsm": "comm/mail/test/browser/shared-modules/NewMailAccountHelpers.jsm",
+  "resource://testing-common/mozmill/NotificationBoxHelpers.jsm": "comm/mail/test/browser/shared-modules/NotificationBoxHelpers.jsm",
+  "resource://testing-common/mozmill/OpenPGPTestUtils.jsm": "comm/mail/test/browser/shared-modules/OpenPGPTestUtils.jsm",
+  "resource://testing-common/mozmill/PrefTabHelpers.jsm": "comm/mail/test/browser/shared-modules/PrefTabHelpers.jsm",
+  "resource://testing-common/mozmill/PromptHelpers.jsm": "comm/mail/test/browser/shared-modules/PromptHelpers.jsm",
+  "resource://testing-common/mozmill/QuickFilterBarHelpers.jsm": "comm/mail/test/browser/shared-modules/QuickFilterBarHelpers.jsm",
+  "resource://testing-common/mozmill/SearchWindowHelpers.jsm": "comm/mail/test/browser/shared-modules/SearchWindowHelpers.jsm",
+  "resource://testing-common/mozmill/SubscribeWindowHelpers.jsm": "comm/mail/test/browser/shared-modules/SubscribeWindowHelpers.jsm",
+  "resource://testing-common/mozmill/WindowHelpers.jsm": "comm/mail/test/browser/shared-modules/WindowHelpers.jsm",
+  "resource://testing-common/mozmill/controller.jsm": "comm/mail/test/browser/shared-modules/controller.jsm",
+  "resource://testing-common/mozmill/utils.jsm": "comm/mail/test/browser/shared-modules/utils.jsm"
+}
diff --git a/comm/tools/lint/Generated.txt b/comm/tools/lint/Generated.txt
new file mode 100644
index 0000000000..c3d6090373
--- /dev/null
+++ b/comm/tools/lint/Generated.txt
@@ -0,0 +1,3 @@
+comm/mailnews/extensions/newsblog/test/unit/resources/feeds-missing-timestamp/feeds.json
+comm/mailnews/extensions/newsblog/test/unit/resources/feeds-simple/feeditems.json
+comm/mailnews/extensions/newsblog/test/unit/resources/feeds-simple/feeds.json
diff --git a/comm/tools/lint/ThirdPartyPaths.txt b/comm/tools/lint/ThirdPartyPaths.txt
new file mode 100644
index 0000000000..4b2922e585
--- /dev/null
+++ b/comm/tools/lint/ThirdPartyPaths.txt
@@ -0,0 +1,18 @@
+comm/calendar/base/modules/Ical.jsm
+comm/chat/protocols/matrix/lib
+comm/chat/protocols/xmpp/lib
+comm/mail/base/content/protovis-r2.6-modded.js
+comm/mail/components/compose/texzilla/TeXZilla.js
+comm/mail/components/storybook/storybook-static
+comm/mailnews/mapi/include
+comm/third_party/asn1js
+comm/third_party/botan
+comm/third_party/bzip2
+comm/third_party/json-c
+comm/third_party/libgcrypt
+comm/third_party/libgpg-error
+comm/third_party/libotr
+comm/third_party/niwcompat
+comm/third_party/python
+comm/third_party/rnp
+comm/third_party/zlib
diff --git a/comm/tools/lint/black.yml b/comm/tools/lint/black.yml
new file mode 100644
index 0000000000..a3850bc7be
--- /dev/null
+++ b/comm/tools/lint/black.yml
@@ -0,0 +1,16 @@
+---
+black:
+    description: Reformat python
+    include:
+        - comm/
+    extensions:
+        - build
+        - configure
+        - mozbuild
+        - py
+    support-files:
+        - 'tools/lint/python/**'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: commlint:black_lint
+    setup: python.black:setup
diff --git a/comm/tools/lint/codespell.yml b/comm/tools/lint/codespell.yml
new file mode 100644
index 0000000000..08b68aac81
--- /dev/null
+++ b/comm/tools/lint/codespell.yml
@@ -0,0 +1,47 @@
+---
+codespell:
+    description: Check code for common misspellings
+    include:
+        - comm/calendar/locales/en-US/
+        - comm/chat/locales/en-US/
+        - comm/mail/branding/
+        - comm/mail/components/telemetry/
+        - comm/mail/locales/en-US/
+        - comm/mailnews/extensions/fts3/
+        - comm/python/
+        - comm/taskcluster/docs/
+        - comm/third_party/
+        - comm/README.md
+    exclude:
+        # Timezones have oddly spelled words that tend to confuse codespell
+        - comm/calendar/locales/en-US/chrome/calendar/timezones.properties
+        - comm/mailnews/extensions/fts3/fts3_porter.c
+    # List of extensions coming from:
+    # tools/lint/{flake8,eslint}.yml
+    # tools/mach_commands.py (clang-format)
+    # + documentation
+    # + localization files
+    extensions:
+        - js
+        - jsm
+        - jxs
+        - mjs
+        - xml
+        - html
+        - xhtml
+        - cpp
+        - c
+        - h
+        - configure
+        - py
+        - properties
+        - rst
+        - md
+        - ftl
+    support-files:
+        - 'tools/lint/spell/**'
+        - 'comm/tools/lint/spell/**'
+    type: external
+    setup: spell:setup
+    payload: commlint:lint_wrapper
+    wraps: spell:lint
diff --git a/comm/tools/lint/commlint/__init__.py b/comm/tools/lint/commlint/__init__.py
new file mode 100644
index 0000000000..19d887e109
--- /dev/null
+++ b/comm/tools/lint/commlint/__init__.py
@@ -0,0 +1,111 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import os
+from contextlib import contextmanager
+from pathlib import Path
+
+from mozlint.pathutils import expand_exclusions
+from mozlint.types import supported_types
+from mozpack import path as mozpath
+
+COMM_EXCLUSION_FILES = [
+    os.path.join("comm", "tools", "lint", "ThirdPartyPaths.txt"),
+    os.path.join("comm", "tools", "lint", "Generated.txt"),
+]
+
+TASKCLUSTER_EXCLUDE_PATHS = (os.path.join("comm", "suite"),)
+
+
+@contextmanager
+def pushd(dest_path: Path):
+    """
+    Sets the cwd within the context
+    :param Path dest_path: The path to the cwd
+    """
+    origin = Path().absolute()
+    try:
+        os.chdir(dest_path)
+        yield
+    finally:
+        os.chdir(origin)
+
+
+def _apply_global_excludes(root, config):
+    exclude = config.get("exclude", [])
+
+    for path in COMM_EXCLUSION_FILES:
+        with open(os.path.join(root, path), "r") as fh:
+            exclude.extend([mozpath.join(root, f.strip()) for f in fh.readlines()])
+
+    if os.environ.get("MOZLINT_NO_SUITE", None):
+        # Ignore Seamonkey-only paths when run from Taskcluster
+        suite_excludes = [mozpath.join(root, path) for path in TASKCLUSTER_EXCLUDE_PATHS]
+        exclude.extend(suite_excludes)
+
+    config["exclude"] = exclude
+
+
+# This makes support file paths absolute, allowing lintpref to find StaticPrefList.yaml
+def _expand_support_files(root, config):
+    support_files = config.get("support-files", [])
+    absolute_support_files = [mozpath.join(root, f) for f in support_files]
+    config["support-files"] = absolute_support_files
+
+
+def eslint_wrapper(paths, config, **lintargs):
+    comm_root = Path(lintargs["root"]) / "comm"
+    with pushd(comm_root):
+        rv = lint_wrapper(paths, config, **lintargs)
+
+    return rv
+
+
+def stylelint_wrapper(paths, config, **lintargs):
+    comm_root = Path(lintargs["root"]) / "comm"
+
+    ignore_file = str(comm_root / ".stylelintignore")
+    lintargs.setdefault("extra_args", [])
+    lintargs["extra_args"].extend(["--ignore-path", ignore_file])
+
+    with pushd(comm_root):
+        rv = lint_wrapper(paths, config, **lintargs)
+
+    return rv
+
+
+def black_lint(paths, config, fix=None, **lintargs):
+    from python.black import run_black
+
+    files = list(expand_exclusions(paths, config, lintargs["root"]))
+
+    # prepend "--line-length 99" to files, it will be processed as an argument
+    black_args = ["-l", "99"] + files
+
+    return run_black(
+        config,
+        black_args,
+        fix=fix,
+        log=lintargs["log"],
+        virtualenv_bin_path=lintargs.get("virtualenv_bin_path"),
+    )
+
+
+def lint_wrapper(paths, config, **lintargs):
+    _apply_global_excludes(lintargs["root"], config)
+    _expand_support_files(lintargs["root"], config)
+
+    payload = supported_types[config.get("wrappedType", config["type"])]
+    config["payload"] = config["wraps"]
+    del config["wraps"]
+
+    if config.get("wrappedType", ""):
+        config["type"] = config["wrappedType"]
+        del config["wrappedType"]
+
+    if config.get("commroot", False):
+        lintargs["root"] = os.path.join(lintargs["root"], "comm")
+        del config["commroot"]
+
+    return payload(paths, config, **lintargs)
diff --git a/comm/tools/lint/commlint/l10n_lint.py b/comm/tools/lint/commlint/l10n_lint.py
new file mode 100644
index 0000000000..ad880d5cde
--- /dev/null
+++ b/comm/tools/lint/commlint/l10n_lint.py
@@ -0,0 +1,16 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from python.l10n_lint import lint_strings, strings_repo_setup
+
+LOCALE = "comm-strings-quarantine"
+STRINGS_REPO = "https://hg.mozilla.org/projects/comm-strings-quarantine"
+
+
+def comm_strings_setup(**lint_args):
+    return strings_repo_setup(STRINGS_REPO, LOCALE)
+
+
+def lint(paths, lintconfig, **lintargs):
+    return lint_strings(LOCALE, paths, lintconfig, **lintargs)
diff --git a/comm/tools/lint/eslint.yml b/comm/tools/lint/eslint.yml
new file mode 100644
index 0000000000..f7ab22e0e8
--- /dev/null
+++ b/comm/tools/lint/eslint.yml
@@ -0,0 +1,18 @@
+---
+eslint:
+    description: JavaScript linter
+    # ESLint infra handles its own path filtering, so just include cwd
+    include: ['.']
+    exclude: []
+    extensions: ['mjs', 'js', 'jsm', 'json', 'jsx', 'html', 'sjs', 'xhtml']
+    support-files:
+        - 'comm/**/.eslintrc.js'
+        - 'comm/.eslintignore'
+        - 'comm/.prettierignore'
+        - 'tools/lint/eslint/**'
+        # Files that can influence global variables
+        - 'toolkit/modules/Services.jsm'
+    type: external
+    payload: commlint:eslint_wrapper
+    wraps: eslint:lint
+    setup: eslint:setup
diff --git a/comm/tools/lint/file-perm.yml b/comm/tools/lint/file-perm.yml
new file mode 100644
index 0000000000..aa20787d14
--- /dev/null
+++ b/comm/tools/lint/file-perm.yml
@@ -0,0 +1,55 @@
+---
+file-perm:
+    description: File permission check
+    include:
+        - comm/
+    extensions:
+        - .build
+        - .c
+        - .cc
+        - .cpp
+        - .flac
+        - .h
+        - .html
+        - .idl
+        - .js
+        - .jsm
+        - .jsx
+        - .m
+        - .md
+        - .m4s
+        - .mjs
+        - .mm
+        - .mozbuild
+        - .mp4
+        - .png
+        - .rs
+        - .rst
+        - .svg
+        - .ttf
+        - .wasm
+        - .webidl
+        - .xhtml
+        - .xml
+        - .xul
+        - .yml
+    support-files:
+        - 'tools/lint/file-perm/**'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: file-perm:lint
+
+maybe-shebang-file-perm:
+    description: "File permission check for files that might have `#!` header."
+    include:
+        - .
+    allow-shebang: true
+    extensions:
+        - .js
+        - .py
+        - .sh
+    support-files:
+        - 'tools/lint/file-perm/**'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: file-perm:lint
diff --git a/comm/tools/lint/file-whitespace.yml b/comm/tools/lint/file-whitespace.yml
new file mode 100644
index 0000000000..cd09b9c736
--- /dev/null
+++ b/comm/tools/lint/file-whitespace.yml
@@ -0,0 +1,27 @@
+---
+file-whitespace:
+    description: File content sanity check
+    include:
+        - comm/.
+    extensions:
+        - .c
+        - .cc
+        - .cpp
+        - .css
+        - .dtd
+        - .idl
+        - .ftl
+        - .h
+        - .html
+        - .md
+        - .properties
+        - .py
+        - .rs
+        - .rst
+        - .webidl
+        - .xhtml
+    support-files:
+        - 'tools/lint/file-whitespace/**'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: file-whitespace:lint
diff --git a/comm/tools/lint/fluent-lint.yml b/comm/tools/lint/fluent-lint.yml
new file mode 100644
index 0000000000..bb8ec8443a
--- /dev/null
+++ b/comm/tools/lint/fluent-lint.yml
@@ -0,0 +1,18 @@
+---
+fluent-lint:
+    description: Linter for Fluent files
+    include:
+        - .
+    exclude:
+        - dom/l10n/tests/mochitest/document_l10n/non-system-principal/localization/test.ftl
+    extensions: ['ftl']
+    support-files:
+        - 'tools/lint/fluent-lint/*.py'
+        - 'comm/tools/lint/fluent-lint/**'
+    brand-files:
+        - 'comm/mail/branding/thunderbird/locales/en-US/brand.ftl'
+        - 'toolkit/locales/en-US/toolkit/branding/brandings.ftl'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: fluent-lint:lint
+    commroot: true
diff --git a/comm/tools/lint/fluent-lint/exclusions.yml b/comm/tools/lint/fluent-lint/exclusions.yml
new file mode 100644
index 0000000000..9701e39086
--- /dev/null
+++ b/comm/tools/lint/fluent-lint/exclusions.yml
@@ -0,0 +1,82 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Warning: Only exclusions for identifiers (ID01) are currently allowed.
+---
+# Only add exceptions to this file if the ID is generated programmatically and
+# can't easily be changed to follow the naming convention.
+# Only lowercase letters and hyphens should be used in Fluent IDs.
+ID01:
+    messages:
+        - accounts-ID
+        - msg-compose-partially-encrypted-inlinePGP
+        - trademarkInfo
+        # aboutDialog.ftl - exclusions same as Firefox
+        - aboutDialog-title
+        - aboutDialog-version
+        - aboutDialog-version-nightly
+    files:
+        # Files listed here must not have a comm/ prefix
+        # policies-descriptions.ftl: These IDs are generated programmatically
+        # from policy names.
+        - mail/locales/en-US/messenger/policies/policies-descriptions.ftl
+        # The webext-perms-description-* IDs are generated programmatically
+        - mail/locales/en-US/messenger/extensionPermissions.ftl
+ID02:
+    messages:
+        # comm/mail/locales/en-US/messenger/accountCentral.ftl
+        - read
+        - compose
+        - search
+        - filter
+        - e2e
+        # comm/mail/locales/en-US/messenger/otr/am-im-otr.ftl
+        - otr-log
+        # comm/mail/locales/en-US/messenger/otr/auth.ftl
+        - otr-auth
+        - auth-yes
+        - auth-no
+        - auth-how
+        # comm/mail/locales/en-US/messenger/otr/otr.ftl
+        - resent
+        # comm/mail/locales/en-US/messenger/preferences/passwordManager.ftl
+        - remove
+        - import
+        # comm/mail/locales/en-US/messenger/preferences/preferences.ftl
+        - ab-label
+        - keep-ask
+    files: []
+# Hard-coded brand names like Firefox or Mozilla should be used only in
+# specific cases, in all other cases the corresponding terms should be used.
+# Check with the localization team for advice.
+CO01:
+    messages:
+        # comm/mail/branding/thunderbird/locales/en-US/brand.ftl
+        - trademarkInfo
+        # comm/mail/locales/en-US/messenger/aboutRights.ftl
+        - rights-intro-point-1
+        - rights-intro-point-2
+        # comm/mail/locales/en-US/messenger/accountcreation/accountSetup.ftl
+        - account-setup-looking-up-db
+        - account-setup-success-settings-db
+        - account-setup-insecure-description
+        # Importers keep "Thunderbird" since that refers to a profile import
+        # of an installed Thunderbird application on the user's machine
+        # aboutImport.ftl
+        - app-name-thunderbird
+        - file-profile-description
+        # importDialog.ftl
+        - thunderbird-import-name
+        - thunderbird-import-description
+        - import-from-thunderbird-zip
+        - import-from-thunderbird-dir
+        # accountCentral.ftl - Donation appeals and descriptions about the Org
+        # rather than the product
+        - about-paragraph
+        - about-paragraph-consider-donation
+        # accountProvisioner.ftl - Refers to agreements made between the Org and
+        # third parties
+        - account-provisioner-mail-account-description
+        - account-provisioner-domain-description
+    files: []
diff --git a/comm/tools/lint/l10n.yml b/comm/tools/lint/l10n.yml
new file mode 100644
index 0000000000..4a01e2b127
--- /dev/null
+++ b/comm/tools/lint/l10n.yml
@@ -0,0 +1,41 @@
+---
+l10n:
+    description: Localization linter
+    # list of include directories of both
+    # comm/mail and comm/calendar l10n.tomls
+    # Paths that are not part of Thunderbird (editor/browser/devtools/etc)
+    # are included to
+    include:
+        - browser/locales/en-US/pdfviewer
+        - comm/calendar/locales/en-US
+        - comm/chat/locales/en-US
+        - comm/mail/branding/thunderbird/locales/en-US
+        - comm/mail/locales/en-US
+        - comm/tools/lint/l10n.yml
+        - devtools/client/locales/en-US
+        - devtools/shared/locales/en-US
+        - devtools/startup/locales/en-US
+        - dom/locales/en-US
+        - netwerk/locales/en-US
+        - security/manager/locales/en-US
+        - toolkit/locales/en-US
+    # files not supported by compare-locales,
+    # and also not relevant to this linter
+    exclude:
+        - comm/mail/locales/en-US/all-l10n.js
+        - comm/mail/extensions/openpgp/test
+        - comm/calendar/locales/en-US/README.txt
+    l10n_configs:
+        - comm/mail/locales/l10n.toml
+        - comm/calendar/locales/l10n.toml
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: commlint.l10n_lint:lint
+    setup: commlint.l10n_lint:comm_strings_setup
+    support-files:
+        - 'comm/calendar/locales/l10n.toml'
+        - 'comm/mail/locales/l10n.toml'
+        - 'comm/tools/lint/l10n.yml'
+        - 'third_party/python/compare-locales/**'
+        - 'third_party/python/fluent/**'
+        - 'tools/lint/python/l10n_lint.py'
diff --git a/comm/tools/lint/license.yml b/comm/tools/lint/license.yml
new file mode 100644
index 0000000000..255d06595a
--- /dev/null
+++ b/comm/tools/lint/license.yml
@@ -0,0 +1,51 @@
+---
+license:
+    description: License Check
+    include:
+        - comm/
+    exclude:
+        # By design
+        - comm/build/macosx/hardenedruntime/developer.entitlements.xml
+        - comm/build/macosx/hardenedruntime/production.entitlements.xml
+        # License not super clear, Firefox excludes its branding
+        - comm/mail/branding/
+        # Mostly empty file
+        - comm/mail/base/content/overrides/app-license-name.html
+        # Need to verify
+        - comm/mail/components/im/messages
+        # Public Domain, but do not match pre-approved strings from Mozilla
+        - comm/mailnews/db/mork/morkDeque.cpp
+        - comm/mailnews/db/mork/morkDeque.h
+        # No license for README files
+        - comm/mailnews/jsaccount/readme.html
+        # License file in directory
+        - comm/mailnews/mime/jsmime
+    extensions:
+        - .c
+        - .cc
+        - .cpp
+        - .css
+        - .dtd
+        - .ftl
+        - .h
+        - .html
+        - .idl
+        - .java
+        - .js
+        - .jsm
+        - .jsx
+        - .m
+        - .mjs
+        - .mm
+        - .properties
+        - .py
+        - .rs
+        - .svg
+        - .xhtml
+        - .xml
+        - .xul
+    support-files:
+        - 'tools/lint/license/**'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: license:lint
diff --git a/comm/tools/lint/lintpref.yml b/comm/tools/lint/lintpref.yml
new file mode 100644
index 0000000000..2e45627925
--- /dev/null
+++ b/comm/tools/lint/lintpref.yml
@@ -0,0 +1,20 @@
+---
+lintpref:
+    description: Linter for static prefs.
+    include:
+        - 'comm/calendar/base/calendar.js'
+        - 'comm/chat/chat-prefs.js'
+        - 'comm/mail/app/profile/'
+        - 'comm/mail/branding/'
+        - 'comm/mail/components/compose/composer.js'
+        - 'comm/mail/components/im/all-im.js'
+        - 'comm/mail/locales/en-US/all-l10n.js'
+        - 'comm/mailnews/extensions/mdn/mdn.js'
+        - 'comm/mailnews/mailnews.js'
+    exclude: []
+    extensions: ['js']
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: libpref:checkdupes
+    support-files:
+        - 'modules/libpref/init/StaticPrefList.yaml'
diff --git a/comm/tools/lint/mach_commands.py b/comm/tools/lint/mach_commands.py
new file mode 100644
index 0000000000..da503b2016
--- /dev/null
+++ b/comm/tools/lint/mach_commands.py
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from mach.decorators import Command
+
+
+def setup_argument_parser():
+    from mozlint import cli
+
+    return cli.MozlintParser()
+
+
+@Command(
+    "commlint",
+    category="thunderbird",
+    description="Run linters with Thunderbird configurations.",
+    parser=setup_argument_parser,
+)
+def commlint(command_context, paths, extra_args=[], **kwargs):
+    kwargs["config_paths"].insert(0, "comm/tools/lint")
+    return command_context._mach_context.commands.dispatch(
+        "lint", command_context._mach_context, paths=paths, argv=extra_args, **kwargs
+    )
diff --git a/comm/tools/lint/mingw-capitalization.yml b/comm/tools/lint/mingw-capitalization.yml
new file mode 100644
index 0000000000..e6679988ab
--- /dev/null
+++ b/comm/tools/lint/mingw-capitalization.yml
@@ -0,0 +1,10 @@
+---
+mingw-capitalization:
+    description: >
+      "A Windows include file is not lowercase, and may break the MinGW build"
+    extensions: ['h', 'cpp', 'cc', 'c']
+    include: ['comm/']
+    type: external
+    level: error
+    payload: commlint:lint_wrapper
+    wraps: cpp.mingw-capitalization:lint
diff --git a/comm/tools/lint/rejected-words.yml b/comm/tools/lint/rejected-words.yml
new file mode 100644
index 0000000000..28d958568f
--- /dev/null
+++ b/comm/tools/lint/rejected-words.yml
@@ -0,0 +1,32 @@
+---
+avoid-blacklist-and-whitelist:
+    description: "Use words like 'skip', 'select', 'allow' or 'deny' instead"
+    level: error
+    include: ['comm/']
+    exclude:
+        - comm/tools/lint/rejected-words.yml
+    type: external
+    wrappedType: regex
+    payload: commlint:lint_wrapper
+    wraps: (black|white)[-_]?list
+    ignore-case: true
+    # same as codespell
+    extensions:
+        - c
+        - configure
+        - cpp
+        - ftl
+        - h
+        - html
+        - idl
+        - js
+        - jsm
+        - jxs
+        - md
+        - mjs
+        - properties
+        - py
+        - rst
+        - xhtml
+        - xml
+        - yml
diff --git a/comm/tools/lint/ruff.yml b/comm/tools/lint/ruff.yml
new file mode 100644
index 0000000000..1b7eb8a56b
--- /dev/null
+++ b/comm/tools/lint/ruff.yml
@@ -0,0 +1,17 @@
+---
+ruff:
+    description: An extremely fast Python linter, written in Rust
+    include: ["."]
+    extensions: ["py"]
+    support-files:
+        - "comm/**/.ruff.toml"
+        - "comm/**/ruff.toml"
+        - "comm/**/pyproject.toml"
+        - "tools/lint/python/ruff.py"
+    # Rules that should result in warnings rather than errors.
+    warning-rules: [PLR, PLW]
+    commroot: true
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: python.ruff:lint
+    setup: python.ruff:setup
diff --git a/comm/tools/lint/shellcheck.yml b/comm/tools/lint/shellcheck.yml
new file mode 100644
index 0000000000..a51796c14e
--- /dev/null
+++ b/comm/tools/lint/shellcheck.yml
@@ -0,0 +1,14 @@
+---
+shellcheck:
+    description: Shell script linter
+    include:
+        - comm/
+    # 1090: https://github.com/koalaman/shellcheck/wiki/SC1090
+    # 'Can't follow a non-constant source'
+    extensions: ['sh']
+    support-files:
+        - 'tools/lint/shell/**'
+    excludecodes: ['1090', '1091']
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: shell:lint
diff --git a/comm/tools/lint/spell/exclude-list.txt b/comm/tools/lint/spell/exclude-list.txt
new file mode 100644
index 0000000000..c9c6691027
--- /dev/null
+++ b/comm/tools/lint/spell/exclude-list.txt
@@ -0,0 +1,28 @@
+1nd
+aare
+acount
+aNumber
+aparent
+cas
+complies
+crate
+delink
+dur
+falsy
+files'
+fpr
+incrementall
+keyserver
+keyservers
+msdos
+nd
+Nd
+optin
+referer
+te
+thru
+tring
+ue
+warmup
+wasn
+whats
diff --git a/comm/tools/lint/stylelint.yml b/comm/tools/lint/stylelint.yml
new file mode 100644
index 0000000000..f23297cd26
--- /dev/null
+++ b/comm/tools/lint/stylelint.yml
@@ -0,0 +1,17 @@
+---
+stylelint:
+    description: CSS linter
+    # Stylelint infra handles its own path filtering, so just include cwd
+    include: ['.']
+    exclude: []
+    extensions: ['css']
+    support-files:
+        - 'package.json'
+        - 'comm/**/.stylelintrc.js'
+        - 'comm/.stylelintignore'
+        - 'tools/lint/stylelint/**'
+    type: external
+    stylelint-rc: comm/.stylelintrc.js
+    payload: commlint:stylelint_wrapper
+    wraps: stylelint:lint
+    setup: stylelint:setup
diff --git a/comm/tools/lint/trojan-source.yml b/comm/tools/lint/trojan-source.yml
new file mode 100644
index 0000000000..ba030bff28
--- /dev/null
+++ b/comm/tools/lint/trojan-source.yml
@@ -0,0 +1,17 @@
+---
+trojan-source:
+    description: Trojan Source attack - CVE-2021-42572
+    include:
+        - comm/
+    extensions:
+        - .c
+        - .cc
+        - .cpp
+        - .h
+        - .py
+        - .rs
+    support-files:
+        - 'tools/lint/trojan-source/**'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: trojan-source:lint
diff --git a/comm/tools/lint/yaml.yml b/comm/tools/lint/yaml.yml
new file mode 100644
index 0000000000..9451d52d3c
--- /dev/null
+++ b/comm/tools/lint/yaml.yml
@@ -0,0 +1,12 @@
+---
+yamllint:
+    description: YAML linter
+    include:
+        - comm/
+    extensions: ['yml', 'yaml']
+    support-files:
+        - '**/.yamllint'
+        - 'tools/lint/yamllint_/**'
+    type: external
+    payload: commlint:lint_wrapper
+    wraps: yamllint_:lint