Module DevLog 

Tag-filtered development logging (LAND_DEV_LOG env var). Must be declared before WindServiceHandlers so the dev_log! macro is available.

DevLog - Tag-filtered development logging

Controlled by LAND_DEV_LOG environment variable. The same tags work in both Mountain (Rust) and Wind/Sky (TypeScript).

Usage

LAND_DEV_LOG=vfs,ipc ./Mountain          # only VFS + IPC
LAND_DEV_LOG=all ./Mountain              # everything
LAND_DEV_LOG=short ./Mountain            # everything, compressed + deduped
LAND_DEV_LOG=terminal,exthost ./Mountain # terminal + extension host
./Mountain                               # nothing (only normal log!() output)

Short Mode

LAND_DEV_LOG=short enables all tags but compresses output:

• Long app-data paths aliased to $APP
• Consecutive duplicate messages counted ((x14) suffix)
• Rust log targets compressed (D::Binary::Main::Entry → Entry)

Tags (38 granular tags across all Elements)

Tag	Scope
vfs	File stat, read, write, readdir, mkdir, delete, copy
ipc	IPC routing: invoke dispatch, channel calls
config	Configuration get/set, env paths, workbench config
lifecycle	Startup, shutdown, phases, window events
storage	Storage get/set/delete, items, optimize
folder	Folder picker, workspace navigation
exthost	Extension host: create, start, kill, exit info
extensions	Extension scanning, activation, management
terminal	Terminal/PTY: create, sendText, profiles, shell
search	Search: findFiles, findInFiles
themes	Theme: list, get active, set
window	Window: focus, maximize, minimize, fullscreen
nativehost	OS integration: process, devtools, shell
clipboard	Clipboard: read/write text, buffer, image
commands	Command registry: execute, getAll
model	Text model: open, close, get, updateContent
output	Output channels: create, append, show
notification	Notifications: show, progress
progress	Progress: begin, end, report
quickinput	Quick input: showQuickPick, showInputBox
workingcopy	Working copy: dirty state
workspaces	Workspace: folders, recent, enter
keybinding	Keybindings: add, remove, lookup
label	Label service: getBase, getUri
history	Navigation history: push, goBack, goForward
decorations	Decorations: get, set, clear
textfile	Text file operations: read, write, save
update	Update service: check, download, apply
encryption	Encryption: encrypt, decrypt
menubar	Menubar updates
url	URL handler: registerExternalUriOpener
grpc	gRPC/Vine: server, client, connections
cocoon	Cocoon sidecar: spawn, health, handshake
bootstrap	Effect-TS bootstrap stages
preload	Preload: globals, polyfills, ipcRenderer

Structs

DedupState

Statics

APP_DATA_PREFIX 🔒

DEDUP

ENABLED_TAGS 🔒

OTLP_AVAILABLE 🔒

OTLP_TRACE_ID 🔒

SHORT_MODE 🔒

Functions

AliasPath

Replace the long app-data path with $APP in a string.

AppDataPrefix

Get the app-data path prefix for aliasing (cached).

DetectAppDataPrefix 🔒

EmitOTLPSpan

Emit an OTLP span to the local collector (Jaeger at 127.0.0.1:4318). Fire-and-forget on a background thread. Stops trying after first failure.

EnabledTags 🔒

FlushDedup

Flush the dedup buffer - prints the pending count if > 1.

GetTraceId 🔒

IsEnabled

Check if a tag is enabled.

IsShort

Whether LAND_DEV_LOG=short is active.

NowNano

rand_u64 🔒