one/dist/esm/vite/plugins/environmentGuardPlugin.mjs

One is a new React Framework that makes Vite serve both native and web.

import { prefixRegex } from "rolldown/filter";
const VIRTUAL_PREFIX = "\0one-env-guard:";
const GUARD_SPECIFIERS = ["server-only", "client-only", "native-only", "web-only"];
const GUARD_SPECIFIERS_RE = new RegExp(`^(?:${GUARD_SPECIFIERS.join("|")})$`);
const ALLOWED_BY_NAME = {
  "native-only": ["ios", "android"],
  "web-only": ["client", "ssr"]
};
const ALLOWED_BY_CONSUMER = {
  "server-only": "server",
  "client-only": "client"
};
function resolveEnvironmentGuard(specifier, envName, consumer, options) {
  if (!GUARD_SPECIFIERS.includes(specifier)) {
    return null;
  }
  if (options?.disabled || options?.disableGuards?.includes(specifier)) {
    return `${VIRTUAL_PREFIX}${specifier}:disabled`;
  }
  return `${VIRTUAL_PREFIX}${specifier}:${envName}:${consumer ?? "unknown"}`;
}
function loadEnvironmentGuard(id) {
  if (!id.startsWith(VIRTUAL_PREFIX)) {
    return null;
  }
  const rest = id.slice(VIRTUAL_PREFIX.length);
  const parts = rest.split(":");
  if (parts.length === 2 && parts[1] === "disabled") {
    return "export {}";
  }
  const specifier = parts[0];
  const envName = parts[1];
  const consumer = parts[2];
  const requiredConsumer = ALLOWED_BY_CONSUMER[specifier];
  if (requiredConsumer) {
    if (consumer === requiredConsumer) return "export {}";
    if (!consumer || consumer === "unknown") {
      const legacyAllowed = requiredConsumer === "server" ? ["ssr"] : ["client"];
      if (legacyAllowed.includes(envName)) return "export {}";
    }
    return `throw new Error("${specifier} cannot be imported in the \\"${envName}\\" environment")`;
  }
  const allowedNames = ALLOWED_BY_NAME[specifier];
  if (!allowedNames) return null;
  if (allowedNames.includes(envName)) return "export {}";
  return `throw new Error("${specifier} cannot be imported in the \\"${envName}\\" environment")`;
}
function environmentGuardPlugin(options) {
  return {
    name: "one:environment-guard",
    enforce: "pre",
    // filters are evaluated in rust, so non-guard ids never cross into js.
    // without them every import in the graph paid a napi round trip to be told
    // it wasn't one of these four specifiers.
    resolveId: {
      filter: {
        id: GUARD_SPECIFIERS_RE
      },
      handler(source) {
        const envName = this.environment?.name;
        if (!envName) return null;
        const consumer = this.environment?.config?.consumer;
        return resolveEnvironmentGuard(source, envName, consumer, options);
      }
    },
    load: {
      filter: {
        id: prefixRegex(VIRTUAL_PREFIX)
      },
      handler(id) {
        return loadEnvironmentGuard(id);
      }
    }
  };
}
export { environmentGuardPlugin, loadEnvironmentGuard, resolveEnvironmentGuard };
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