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entrypoint_deprecation.ts
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import { getEnvironmentVariable } from "./env.js";
export function logVersion010MigrationWarning({
oldEntrypointName,
newEntrypointName,
newPackageName = "@langchain/community",
}: {
oldEntrypointName: string;
newEntrypointName?: string;
newPackageName?: string;
}) {
let finalEntrypointName = "";
if (newEntrypointName === undefined) {
finalEntrypointName = `/${oldEntrypointName}`;
} else if (newEntrypointName !== "") {
finalEntrypointName = `/${newEntrypointName}`;
}
let warningText = [
`[WARNING]: Importing from "langchain/${oldEntrypointName}" is deprecated.`,
``,
`Instead, please add the "${newPackageName}" package to your project with e.g.`,
``,
` $ npm install ${newPackageName}`,
``,
`and import from "${newPackageName}${finalEntrypointName}".`,
``,
`This will be mandatory after the next "langchain" minor version bump to 0.2.`,
].join("\n");
if (newPackageName === "@langchain/core") {
warningText = [
`[WARNING]: Importing from "langchain/${oldEntrypointName}" is deprecated.`,
``,
`Instead, please import from "${newPackageName}${finalEntrypointName}".`,
``,
`This will be mandatory after the next "langchain" minor version bump to 0.2.`,
].join("\n");
}
if (
getEnvironmentVariable("LANGCHAIN_SUPPRESS_MIGRATION_WARNINGS") !== "true"
) {
console.warn(warningText);
}
}
export function logVersion020MigrationWarning({
oldEntrypointName,
newEntrypointName,
newPackageName = "@langchain/community",
}: {
oldEntrypointName: string;
newEntrypointName?: string;
newPackageName?: string;
}) {
let finalEntrypointName = "";
if (newEntrypointName === undefined) {
finalEntrypointName = `/${oldEntrypointName}`;
} else if (newEntrypointName !== "") {
finalEntrypointName = `/${newEntrypointName}`;
}
let warningText = [
`[WARNING]: Importing from "langchain/${oldEntrypointName}" is deprecated.`,
``,
`Instead, please add the "${newPackageName}" package to your project with e.g.`,
``,
` $ npm install ${newPackageName}`,
``,
`and import from "${newPackageName}${finalEntrypointName}".`,
``,
`This will be mandatory after the next "langchain" minor version bump to 0.3.`,
].join("\n");
if (newPackageName === "@langchain/core") {
warningText = [
`[WARNING]: Importing from "langchain/${oldEntrypointName}" is deprecated.`,
``,
`Instead, please import from "${newPackageName}${finalEntrypointName}".`,
``,
`This will be mandatory after the next "langchain" minor version bump to 0.3.`,
].join("\n");
}
if (
getEnvironmentVariable("LANGCHAIN_SUPPRESS_MIGRATION_WARNINGS") !== "true"
) {
console.warn(warningText);
}
}