lib.utils-typescript

@lssm-tech/lib.utils-typescript

Builds use the existing public manifest targets, retaining all 31 existing root/type entrypoints. The root's runtime helpers remain bundled once per target; new private files cannot become build entries or public subpaths through a source glob. Source and published export maps remain explicit, and strict declaration consumers keep their import paths. bun run test checks the runtime exhaustiveness helper and entry policy; packed probes qualify utility types.

The supported UtilsTypescriptFeature retains its complete FeatureModuleSpec type and existing metadata. Its canonical model/helper dependency is the portable @lssm-tech/lib.contracts-spec-core/features surface; the utility package no longer loads the legacy feature installation and registry surface through that helper. The production Core dependency also supplies declarations to isolated consumers.

Website: https://contractspec.io

TypeScript utility types and helpers.

What It Provides

• Couche: lib.
• Consumers: many libs and bundles (wide blast radius).
• Related ContractSpec packages include @lssm-tech/tool.bun, @lssm-tech/tool.typescript.
• Related ContractSpec packages include @lssm-tech/tool.bun, @lssm-tech/tool.typescript.

Installation

npm install @lssm-tech/lib.utils-typescript

or

bun add @lssm-tech/lib.utils-typescript

Usage

Import the root entrypoint from @lssm-tech/lib.utils-typescript, or choose a documented subpath when you only need one part of the package surface.

Architecture

• src/index.ts is the root public barrel and package entrypoint.
• src/lib/ contains package-local helper utilities and adapters.
• src/staticShouldNotHappen.ts is part of the package's public or composition surface.

Public Entry Points

• Export . resolves through ./src/index.ts.
• Export ./lib/AwaitedResult resolves through ./src/lib/AwaitedResult.ts.
• Export ./lib/BrowserNativeObject resolves through ./src/lib/BrowserNativeObject.ts.
• Export ./lib/DeepInfiniteArray resolves through ./src/lib/DeepInfiniteArray.ts.
• Export ./lib/DeepKeepOnly resolves through ./src/lib/DeepKeepOnly.ts.
• Export ./lib/DeepKey resolves through ./src/lib/DeepKey.ts.
• Export ./lib/DeepMap resolves through ./src/lib/DeepMap.ts.
• Export ./lib/DeepNullable resolves through ./src/lib/DeepNullable.ts.
• Export ./lib/DeepOr resolves through ./src/lib/DeepOr.ts.
• Export ./lib/DeepPartial resolves through ./src/lib/DeepPartial.ts.
• The package publishes 33 total export subpaths; keep docs aligned with package.json.

Local Commands

• bun run dev — contractspec-bun-build dev
• bun run build — contractspec-bun-build build
• bun run lint — bun run lint:fix
• bun run lint:check — biome check .
• bun run lint:fix — biome check --write --unsafe --only=nursery/useSortedClasses . && biome check --write .
• bun run typecheck — tsgo --noEmit
• bun run publish:pkg — bun publish --tolerate-republish --ignore-scripts --verbose
• bun run publish:pkg:canary — bun publish:pkg --tag canary
• bun run clean — rm -rf dist
• bun run build:bundle — contractspec-bun-build transpile
• bun run build:types — contractspec-bun-build types
• bun run prebuild — contractspec-bun-build prebuild

Recent Updates

• Replace eslint+prettier by biomejs to optimize speed.

Notes

• Utility types are used across the entire monorepo — changes can break many packages.
• Must stay zero-dependency (no runtime deps).
• Test any signature change against downstream consumers before merging.

Portable filesystem and logging contracts now have one canonical owner in @lssm-tech/lib.utils-typescript/ports/fs and /ports/logger. Their complete interfaces are unchanged. Existing CLI /ports/fs and /ports/logger imports remain compatible type exports; Builder delivery uses the portable contracts directly and no longer depends on the CLI host.

Canonical operation names

The explicit ./lib/operationNames leaf owns the complete provider-neutral defaultRestPath, sanitizeMcpName, defaultMcpTool, defaultMcpPrompt and defaultGqlField helpers. Legacy JSON-schema imports forward to these same functions; dots, version formatting, prompt sanitization and truncation defaults remain unchanged. JSON-schema conversion stays in its existing owner.