gatsby-plugin-page-creator/validate-path-query.js

Gatsby plugin that automatically creates pages from React components in specified directories

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
exports.__esModule = true;
exports.validatePathQuery = validatePathQuery;
var _flatten2 = _interopRequireDefault(require("lodash/flatten"));
var _path = _interopRequireDefault(require("path"));
function validatePathQuery(filePath, extensions) {
  // Paths must start with /
  if (filePath.startsWith(`/`) !== true) {
    throw new Error(`PageCreator: To query node "gatsbyPath" the "filePath" argument must be an absolute path, starting with a /
Please change this to: "/${filePath}"`);
  }

  // Paths must not include file extension
  if (/\.[a-z]+$/i.test(filePath)) {
    throw new Error(`PageCreator: To query node "gatsbyPath" the "filePath" argument must omit the file extension
Please change ${filePath} to "${filePath.replace(/\.[a-z]+$/i, ``)}"`);
  }

  // Paths must not utilize src/pages
  if (filePath.includes(`src/pages`)) {
    throw new Error(`PageCreator: To query node "gatsbyPath" the "filePath" argument must omit the src/pages prefix.
Please change this to: "${filePath.replace(/\/?src\/pages\//, ``)}"`);
  }

  // Paths must not include index
  if (/index$/.test(filePath)) {
    throw new Error(`PageCreator: To query node "gatsbyPath" the "filePath" argument must omit index.
Please change this to: "${filePath.replace(/index$/, ``)}"`);
  }
  const absolutePath = _path.default.join(process.cwd(), `src/pages`, filePath);
  const file = (0, _flatten2.default)(extensions.map(ext => [``, `${_path.default.sep}index`].map(index => {
    try {
      return require.resolve(absolutePath + index + ext);
    } catch (e) {
      return false;
    }
  }))).filter(Boolean);
  if (file.length === 0 || file[0].length === 0) {
    throw new Error(`PageCreator: To query node "gatsbyPath" the "filePath" argument must represent a file that exists.
Unable to find a file at: "${absolutePath}"`);
  }
}