gatsby-plugin-gatsby-cloud/ipc.js

A Gatsby plugin which optimizes working with Gatsby Cloud

"use strict";

exports.__esModule = true;
exports.emitFileNodes = emitFileNodes;
exports.emitHeaders = emitHeaders;
exports.emitRedirects = emitRedirects;
exports.emitRewrites = emitRewrites;
exports.emitRoutes = emitRoutes;
exports.emitTotalRenderedPageCount = emitTotalRenderedPageCount;
function sendOrPromise(msg) {
  if (!process.send) {
    return false;
  }
  let resolve;
  let reject;
  const promise = new Promise((res, rej) => {
    resolve = res;
    reject = rej;
  });
  // `process.send` can buffer messages and delay their delivery. In this case it returns false.
  //  if process exists before all messages in the buffer are processed - remaining messages will be lost.
  //
  //  The function returns sync `true` when message is handled immediately and Promise when
  //  it is buffered (this is essentially a backpressure for lots of sync calls to `process.send`).
  //
  //  Callers must `await` results of this function to ensure process doesn't exit early.
  //
  // See also https://github.com/nodejs/node/issues/7657#issuecomment-253744600
  // and https://nodejs.org/dist/latest-v14.x/docs/api/child_process.html#child_process_subprocess_send_message_sendhandle_options_callback
  //
  const sent = process.send(msg, error => {
    if (error) {
      reject(error);
    } else {
      resolve(true);
    }
  });
  return sent === false ? promise : true;
}
function emitRoutes(routes) {
  return sendOrPromise({
    type: `LOG_ACTION`,
    action: {
      type: `CREATE_ROUTE`,
      payload: {
        routes
      }
    }
  });
}
function emitTotalRenderedPageCount(totalRenderedPageCount) {
  return sendOrPromise({
    type: `LOG_ACTION`,
    action: {
      type: `CREATE_TOTAL_RENDERED_PAGE_COUNT`,
      payload: {
        totalRenderedPageCount
      }
    }
  });
}
function emitRedirects(redirect) {
  return sendOrPromise({
    type: `LOG_ACTION`,
    action: {
      type: `CREATE_REDIRECT_ENTRY`,
      payload: redirect
    }
  });
}
function emitRewrites(rewrite) {
  return sendOrPromise({
    type: `LOG_ACTION`,
    action: {
      type: `CREATE_REWRITE_ENTRY`,
      payload: rewrite
    }
  });
}
function emitHeaders(header) {
  return sendOrPromise({
    type: `LOG_ACTION`,
    action: {
      type: `CREATE_HEADER_ENTRY`,
      payload: header
    }
  });
}
function emitFileNodes(file) {
  return sendOrPromise({
    type: `LOG_ACTION`,
    action: {
      type: `CREATE_FILE_NODE`,
      payload: file
    }
  });
}