gatsby-plugin-typescript/gatsby-node.js

Adds TypeScript support to Gatsby

"use strict";

const resolvableExtensions = () => [`.ts`, `.tsx`];
function onCreateBabelConfig({
  actions
}, options) {
  actions.setBabelPreset({
    name: require.resolve(`@babel/preset-typescript`),
    options
  });
  actions.setBabelPlugin({
    name: require.resolve(`@babel/plugin-proposal-optional-chaining`)
  });
  actions.setBabelPlugin({
    name: require.resolve(`@babel/plugin-proposal-nullish-coalescing-operator`)
  });
  actions.setBabelPlugin({
    name: require.resolve(`@babel/plugin-proposal-numeric-separator`)
  });
}
function onCreateWebpackConfig({
  actions,
  loaders
}) {
  if (typeof (loaders === null || loaders === void 0 ? void 0 : loaders.js) !== `function`) {
    return;
  }
  actions.setWebpackConfig({
    module: {
      rules: [{
        test: /\.tsx?$/,
        use: ({
          resourceQuery,
          issuer
        }) => [loaders.js({
          isPageTemplate: /async-requires/.test(issuer),
          resourceQuery
        })]
      }]
    }
  });
}
exports.pluginOptionsSchema = ({
  Joi
}) => Joi.object({
  isTSX: Joi.boolean().description(`Enables jsx parsing.`).default(false),
  jsxPragma: Joi.string().description(`Replace the function used when compiling JSX expressions.`).default(`React`),
  jsxPragmaFrag: Joi.string().description(`Replace the function used when compiling JSX fragment expressions.`).optional(),
  allExtensions: Joi.boolean().description(`Indicates that every file should be parsed as TS or TSX.`).default(false).when(`isTSX`, {
    is: true,
    then: Joi.valid(true)
  }),
  allowNamespaces: Joi.boolean().description(`Enables compilation of TypeScript namespaces.`).optional(),
  allowDeclareFields: Joi.boolean().description(`When enabled, type-only class fields are only removed if they are prefixed with the declare modifier.`).optional(),
  onlyRemoveTypeImports: Joi.boolean().description(`When set to true, the transform will only remove type-only imports (introduced in TypeScript 3.8).` + `This should only be used if you are using TypeScript >= 3.8.`).optional()
});
exports.resolvableExtensions = resolvableExtensions;
exports.onCreateBabelConfig = onCreateBabelConfig;
exports.onCreateWebpackConfig = onCreateWebpackConfig;