jotai/babel/preset.js

👻 Next gen state management that will spook you

'use strict';

var path = require('path');
var _templateBuilder = require('@babel/template');

function isAtom(t, callee, customAtomNames) {
  if (customAtomNames === void 0) {
    customAtomNames = [];
  }
  var atomNames = [].concat(atomFunctionNames, customAtomNames);
  if (t.isIdentifier(callee) && atomNames.includes(callee.name)) {
    return true;
  }
  if (t.isMemberExpression(callee)) {
    var property = callee.property;
    if (t.isIdentifier(property) && atomNames.includes(property.name)) {
      return true;
    }
  }
  return false;
}
var atomFunctionNames = ['abortableAtom', 'atom', 'atomFamily', 'atomWithDefault', 'atomWithHash', 'atomWithImmer', 'atomWithInfiniteQuery', 'atomWithMachine', 'atomWithMutation', 'atomWithObservable', 'atomWithProxy', 'atomWithQuery', 'atomWithReducer', 'atomWithReset', 'atomWithSubscription', 'atomWithStorage', 'atomWithStore', 'freezeAtom', 'loadable', 'selectAtom', 'splitAtom'];

var templateBuilder$1 = _templateBuilder.default || _templateBuilder;
function debugLabelPlugin(_ref, options) {
  var t = _ref.types;
  return {
    visitor: {
      ExportDefaultDeclaration: function ExportDefaultDeclaration(nodePath, state) {
        var node = nodePath.node;
        if (t.isCallExpression(node.declaration) && isAtom(t, node.declaration.callee, options == null ? void 0 : options.customAtomNames)) {
          var filename = state.filename || 'unknown';
          var displayName = path.basename(filename, path.extname(filename));
          if (displayName === 'index') {
            displayName = path.basename(path.dirname(filename));
          }
          var buildExport = templateBuilder$1("\n          const %%atomIdentifier%% = %%atom%%;\n          export default %%atomIdentifier%%\n          ");
          var ast = buildExport({
            atomIdentifier: t.identifier(displayName),
            atom: node.declaration
          });
          nodePath.replaceWithMultiple(ast);
        }
      },
      VariableDeclarator: function VariableDeclarator(path) {
        if (t.isIdentifier(path.node.id) && t.isCallExpression(path.node.init) && isAtom(t, path.node.init.callee, options == null ? void 0 : options.customAtomNames)) {
          path.parentPath.insertAfter(t.expressionStatement(t.assignmentExpression('=', t.memberExpression(t.identifier(path.node.id.name), t.identifier('debugLabel')), t.stringLiteral(path.node.id.name))));
        }
      }
    }
  };
}

var templateBuilder = _templateBuilder.default || _templateBuilder;
function reactRefreshPlugin(_ref, options) {
  var t = _ref.types;
  return {
    pre: function pre(_ref2) {
      var opts = _ref2.opts;
      if (!opts.filename) {
        throw new Error('Filename must be available');
      }
    },
    visitor: {
      Program: {
        exit: function exit(path) {
          var jotaiAtomCache = templateBuilder("\n          globalThis.jotaiAtomCache = globalThis.jotaiAtomCache || {\n            cache: new Map(),\n            get(name, inst) { \n              if (this.cache.has(name)) {\n                return this.cache.get(name)\n              }\n              this.cache.set(name, inst)\n              return inst\n            },\n          }")();
          path.unshiftContainer('body', jotaiAtomCache);
        }
      },
      ExportDefaultDeclaration: function ExportDefaultDeclaration(nodePath, state) {
        var node = nodePath.node;
        if (t.isCallExpression(node.declaration) && isAtom(t, node.declaration.callee, options == null ? void 0 : options.customAtomNames)) {
          var filename = state.filename || 'unknown';
          var atomKey = filename + "/defaultExport";
          var buildExport = templateBuilder("export default globalThis.jotaiAtomCache.get(%%atomKey%%, %%atom%%)");
          var ast = buildExport({
            atomKey: t.stringLiteral(atomKey),
            atom: node.declaration
          });
          nodePath.replaceWith(ast);
        }
      },
      VariableDeclarator: function VariableDeclarator(nodePath, state) {
        var _nodePath$parentPath$, _nodePath$parentPath$2;
        if (t.isIdentifier(nodePath.node.id) && t.isCallExpression(nodePath.node.init) && isAtom(t, nodePath.node.init.callee, options == null ? void 0 : options.customAtomNames) && ((_nodePath$parentPath$ = nodePath.parentPath.parentPath) != null && _nodePath$parentPath$.isProgram() || (_nodePath$parentPath$2 = nodePath.parentPath.parentPath) != null && _nodePath$parentPath$2.isExportNamedDeclaration())) {
          var filename = state.filename || 'unknown';
          var atomKey = filename + "/" + nodePath.node.id.name;
          var buildAtomDeclaration = templateBuilder("const %%atomIdentifier%% = globalThis.jotaiAtomCache.get(%%atomKey%%, %%atom%%)");
          var ast = buildAtomDeclaration({
            atomIdentifier: t.identifier(nodePath.node.id.name),
            atomKey: t.stringLiteral(atomKey),
            atom: nodePath.node.init
          });
          nodePath.parentPath.replaceWith(ast);
        }
      }
    }
  };
}

function jotaiPreset(_, options) {
  return {
    plugins: [[debugLabelPlugin, options], [reactRefreshPlugin, options]]
  };
}

module.exports = jotaiPreset;