fix: stronger type declaration (#975)

.changeset/soft-socks-promise.md

.github/workflows/release.yml

examples/package.json

package.json

packages/env/src/fs/memfs/index.d.ts

packages/env/src/fs/memory.ts

packages/env/src/tokenizers/js.ts

packages/llamaindex/package.json

pnpm-lock.yaml