fix(langchain): Fix serialization for initChatModel #1669

Workflow file for this run

.github/workflows/test-exports.yml at b12ccd4

	name: Environment tests

	on:
	pull_request:
	# Only run workflow if files in these directories are changed
	paths:
	- 'langchain/**'
	- 'langchain-core/**'
	- 'libs/langchain-anthropic/**'
	- 'libs/langchain-community/**'
	- 'libs/langchain-openai/**'
	workflow_dispatch: # Allows triggering the workflow manually in GitHub UI

	# If another push to the same PR or branch happens while this workflow is still running,
	# cancel the earlier run in favor of the next run.
	#
	# There's no point in testing an outdated version of the code. GitHub only allows
	# a limited number of job runners to be active at the same time, so it's better to cancel
	# pointless jobs early so that more useful jobs can run sooner.
	concurrency:
	group: exports-${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	env:
	PUPPETEER_SKIP_DOWNLOAD: "true"
	PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
	NODE_VERSION: "18.x"

	# Run a separate job for each check in the docker-compose file,
	# so that they run in parallel instead of overwhelming the default 2 CPU runner.
	jobs:
	exports-esbuild:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.NODE_VERSION }}
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --immutable

	- name: Build dependencies
	run: yarn build --filter=langchain --filter=@langchain/anthropic --filter=@langchain/community --filter=@langchain/openai
	shell: bash

	- name: Test esbuild exports
	run: docker compose -f environment_tests/docker-compose.yml run test-exports-esbuild

	exports-esm:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.NODE_VERSION }}
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --immutable

	- name: Build dependencies
	run: yarn build --filter=langchain --filter=@langchain/anthropic --filter=@langchain/community --filter=@langchain/openai
	shell: bash

	- name: Test esm exports
	run: docker compose -f environment_tests/docker-compose.yml run test-exports-esm

	exports-cjs:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.NODE_VERSION }}
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --immutable

	- name: Build dependencies
	run: yarn build --filter=langchain --filter=@langchain/anthropic --filter=@langchain/community --filter=@langchain/openai
	shell: bash

	- name: Test cjs exports
	run: docker compose -f environment_tests/docker-compose.yml run test-exports-cjs

	exports-cf:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.NODE_VERSION }}
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --immutable

	- name: Build dependencies
	run: yarn build --filter=langchain --filter=@langchain/anthropic --filter=@langchain/community --filter=@langchain/openai
	shell: bash

	- name: Test cf exports
	run: docker compose -f environment_tests/docker-compose.yml run test-exports-cf

	exports-vercel:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.NODE_VERSION }}
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --immutable

	- name: Build dependencies
	run: yarn build --filter=langchain --filter=@langchain/anthropic --filter=@langchain/community --filter=@langchain/openai
	shell: bash

	- name: Test vercel exports
	run: docker compose -f environment_tests/docker-compose.yml run test-exports-vercel

	exports-vite:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.NODE_VERSION }}
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --immutable

	- name: Build dependencies
	run: yarn build --filter=langchain --filter=@langchain/anthropic --filter=@langchain/community --filter=@langchain/openai
	shell: bash

	- name: Test vite exports
	run: docker compose -f environment_tests/docker-compose.yml run test-exports-vite

	exports-tsc:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v4
	- name: Use Node.js ${{ env.NODE_VERSION }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.NODE_VERSION }}
	cache: "yarn"
	- name: Install dependencies
	run: yarn install --immutable

	- name: Build dependencies
	run: yarn build --filter=langchain --filter=@langchain/anthropic --filter=@langchain/community --filter=@langchain/openai
	shell: bash

	- name: Test compiling exports with tsc
	run: docker compose -f environment_tests/docker-compose.yml run test-exports-tsc

	# exports-bun:
	# runs-on: ubuntu-latest
	# steps:
	# - uses: actions/checkout@v4
	# - name: Use Node.js ${{ env.NODE_VERSION }}
	# uses: actions/setup-node@v3
	# with:
	# node-version: ${{ env.NODE_VERSION }}
	# cache: "yarn"
	# - name: Install dependencies
	# run: yarn install --immutable
	# - name: Build
	# run: yarn workspace langchain build
	# shell: bash

	# - name: Test bun exports
	# run: docker compose -f environment_tests/docker-compose.yml run test-exports-bun

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fix(langchain): Fix serialization for initChatModel #1669

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fix(langchain): Fix serialization for initChatModel #1669

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