react-scripts
Version:
Configuration and scripts for Create React App.
218 lines (186 loc) • 22.8 kB
JavaScript
var _lodash = require('lodash.find');
var _lodash2 = _interopRequireDefault(_lodash);
var _importType = require('../core/importType');
var _importType2 = _interopRequireDefault(_importType);
var _staticRequire = require('../core/staticRequire');
var _staticRequire2 = _interopRequireDefault(_staticRequire);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var defaultGroups = ['builtin', 'external', 'parent', 'sibling', 'index'];
// REPORTING
function reverse(array) {
return array.map(function (v) {
return {
name: v.name,
rank: -v.rank,
node: v.node
};
}).reverse();
}
function findOutOfOrder(imported) {
if (imported.length === 0) {
return [];
}
var maxSeenRankNode = imported[0];
return imported.filter(function (importedModule) {
var res = importedModule.rank < maxSeenRankNode.rank;
if (maxSeenRankNode.rank < importedModule.rank) {
maxSeenRankNode = importedModule;
}
return res;
});
}
function reportOutOfOrder(context, imported, outOfOrder, order) {
outOfOrder.forEach(function (imp) {
var found = (0, _lodash2.default)(imported, function hasHigherRank(importedItem) {
return importedItem.rank > imp.rank;
});
context.report(imp.node, '`' + imp.name + '` import should occur ' + order + ' import of `' + found.name + '`');
});
}
function makeOutOfOrderReport(context, imported) {
var outOfOrder = findOutOfOrder(imported);
if (!outOfOrder.length) {
return;
}
// There are things to report. Try to minimize the number of reported errors.
var reversedImported = reverse(imported);
var reversedOrder = findOutOfOrder(reversedImported);
if (reversedOrder.length < outOfOrder.length) {
reportOutOfOrder(context, reversedImported, reversedOrder, 'after');
return;
}
reportOutOfOrder(context, imported, outOfOrder, 'before');
}
// DETECTING
function computeRank(context, ranks, name, type) {
return ranks[(0, _importType2.default)(name, context)] + (type === 'import' ? 0 : 100);
}
function registerNode(context, node, name, type, ranks, imported) {
var rank = computeRank(context, ranks, name, type);
if (rank !== -1) {
imported.push({ name: name, rank: rank, node: node });
}
}
function isInVariableDeclarator(node) {
return node && (node.type === 'VariableDeclarator' || isInVariableDeclarator(node.parent));
}
var types = ['builtin', 'external', 'internal', 'parent', 'sibling', 'index'];
// Creates an object with type-rank pairs.
// Example: { index: 0, sibling: 1, parent: 1, external: 1, builtin: 2, internal: 2 }
// Will throw an error if it contains a type that does not exist, or has a duplicate
function convertGroupsToRanks(groups) {
var rankObject = groups.reduce(function (res, group, index) {
if (typeof group === 'string') {
group = [group];
}
group.forEach(function (groupItem) {
if (types.indexOf(groupItem) === -1) {
throw new Error('Incorrect configuration of the rule: Unknown type `' + JSON.stringify(groupItem) + '`');
}
if (res[groupItem] !== undefined) {
throw new Error('Incorrect configuration of the rule: `' + groupItem + '` is duplicated');
}
res[groupItem] = index;
});
return res;
}, {});
var omittedTypes = types.filter(function (type) {
return rankObject[type] === undefined;
});
return omittedTypes.reduce(function (res, type) {
res[type] = groups.length;
return res;
}, rankObject);
}
function makeNewlinesBetweenReport(context, imported, newlinesBetweenImports) {
var getNumberOfEmptyLinesBetween = function getNumberOfEmptyLinesBetween(currentImport, previousImport) {
var linesBetweenImports = context.getSourceCode().lines.slice(previousImport.node.loc.end.line, currentImport.node.loc.start.line - 1);
return linesBetweenImports.filter(function (line) {
return !line.trim().length;
}).length;
};
var previousImport = imported[0];
imported.slice(1).forEach(function (currentImport) {
if (newlinesBetweenImports === 'always') {
if (currentImport.rank !== previousImport.rank && getNumberOfEmptyLinesBetween(currentImport, previousImport) === 0) {
context.report(previousImport.node, 'There should be at least one empty line between import groups');
} else if (currentImport.rank === previousImport.rank && getNumberOfEmptyLinesBetween(currentImport, previousImport) > 0) {
context.report(previousImport.node, 'There should be no empty line within import group');
}
} else {
if (getNumberOfEmptyLinesBetween(currentImport, previousImport) > 0) {
context.report(previousImport.node, 'There should be no empty line between import groups');
}
}
previousImport = currentImport;
});
}
module.exports = function importOrderRule(context) {
var options = context.options[0] || {};
var ranks = void 0;
try {
ranks = convertGroupsToRanks(options.groups || defaultGroups);
} catch (error) {
// Malformed configuration
return {
Program: function Program(node) {
context.report(node, error.message);
}
};
}
var imported = [];
var level = 0;
function incrementLevel() {
level++;
}
function decrementLevel() {
level--;
}
return {
ImportDeclaration: function handleImports(node) {
if (node.specifiers.length) {
// Ignoring unassigned imports
var name = node.source.value;
registerNode(context, node, name, 'import', ranks, imported);
}
},
CallExpression: function handleRequires(node) {
if (level !== 0 || !(0, _staticRequire2.default)(node) || !isInVariableDeclarator(node.parent)) {
return;
}
var name = node.arguments[0].value;
registerNode(context, node, name, 'require', ranks, imported);
},
'Program:exit': function reportAndReset() {
makeOutOfOrderReport(context, imported);
if ('newlines-between' in options) {
makeNewlinesBetweenReport(context, imported, options['newlines-between']);
}
imported = [];
},
FunctionDeclaration: incrementLevel,
FunctionExpression: incrementLevel,
ArrowFunctionExpression: incrementLevel,
BlockStatement: incrementLevel,
ObjectExpression: incrementLevel,
'FunctionDeclaration:exit': decrementLevel,
'FunctionExpression:exit': decrementLevel,
'ArrowFunctionExpression:exit': decrementLevel,
'BlockStatement:exit': decrementLevel,
'ObjectExpression:exit': decrementLevel
};
};
module.exports.schema = [{
type: 'object',
properties: {
groups: {
type: 'array'
},
'newlines-between': {
enum: ['always', 'never']
}
},
additionalProperties: false
}];
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strict'\n\nimport find from 'lodash.find'\nimport importType from '../core/importType'\nimport isStaticRequire from '../core/staticRequire'\n\nconst defaultGroups = ['builtin', 'external', 'parent', 'sibling', 'index']\n\n// REPORTING\n\nfunction reverse(array) {\n  return array.map(function (v) {\n    return {\n      name: v.name,\n      rank: -v.rank,\n      node: v.node,\n    }\n  }).reverse()\n}\n\nfunction findOutOfOrder(imported) {\n  if (imported.length === 0) {\n    return []\n  }\n  let maxSeenRankNode = imported[0]\n  return imported.filter(function (importedModule) {\n    const res = importedModule.rank < maxSeenRankNode.rank\n    if (maxSeenRankNode.rank < importedModule.rank) {\n      maxSeenRankNode = importedModule\n    }\n    return res\n  })\n}\n\nfunction reportOutOfOrder(context, imported, outOfOrder, order) {\n  outOfOrder.forEach(function (imp) {\n    const found = find(imported, function hasHigherRank(importedItem) {\n      return importedItem.rank > imp.rank\n    })\n    context.report(imp.node, '`' + imp.name + '` import should occur ' + order +\n      ' import of `' + found.name + '`')\n  })\n}\n\nfunction makeOutOfOrderReport(context, imported) {\n  const outOfOrder = findOutOfOrder(imported)\n  if (!outOfOrder.length) {\n    return\n  }\n  // There are things to report. Try to minimize the number of reported errors.\n  const reversedImported = reverse(imported)\n  const reversedOrder = findOutOfOrder(reversedImported)\n  if (reversedOrder.length < outOfOrder.length) {\n    reportOutOfOrder(context, reversedImported, reversedOrder, 'after')\n    return\n  }\n  reportOutOfOrder(context, imported, outOfOrder, 'before')\n}\n\n// DETECTING\n\nfunction computeRank(context, ranks, name, type) {\n  return ranks[importType(name, context)] +\n    (type === 'import' ? 0 : 100)\n}\n\nfunction registerNode(context, node, name, type, ranks, imported) {\n  const rank = computeRank(context, ranks, name, type)\n  if (rank !== -1) {\n    imported.push({name, rank, node})\n  }\n}\n\nfunction isInVariableDeclarator(node) {\n  return node &&\n    (node.type === 'VariableDeclarator' || isInVariableDeclarator(node.parent))\n}\n\nconst types = ['builtin', 'external', 'internal', 'parent', 'sibling', 'index']\n\n// Creates an object with type-rank pairs.\n// Example: { index: 0, sibling: 1, parent: 1, external: 1, builtin: 2, internal: 2 }\n// Will throw an error if it contains a type that does not exist, or has a duplicate\nfunction convertGroupsToRanks(groups) {\n  const rankObject = groups.reduce(function(res, group, index) {\n    if (typeof group === 'string') {\n      group = [group]\n    }\n    group.forEach(function(groupItem) {\n      if (types.indexOf(groupItem) === -1) {\n        throw new Error('Incorrect configuration of the rule: Unknown type `' +\n          JSON.stringify(groupItem) + '`')\n      }\n      if (res[groupItem] !== undefined) {\n        throw new Error('Incorrect configuration of the rule: `' + groupItem + '` is duplicated')\n      }\n      res[groupItem] = index\n    })\n    return res\n  }, {})\n\n  const omittedTypes = types.filter(function(type) {\n    return rankObject[type] === undefined\n  })\n\n  return omittedTypes.reduce(function(res, type) {\n    res[type] = groups.length\n    return res\n  }, rankObject)\n}\n\nfunction makeNewlinesBetweenReport (context, imported, newlinesBetweenImports) {\n  const getNumberOfEmptyLinesBetween = (currentImport, previousImport) => {\n    const linesBetweenImports = context.getSourceCode().lines.slice(\n      previousImport.node.loc.end.line,\n      currentImport.node.loc.start.line - 1\n    )\n\n    return linesBetweenImports.filter((line) => !line.trim().length).length\n  }\n  let previousImport = imported[0]\n\n  imported.slice(1).forEach(function(currentImport) {\n    if (newlinesBetweenImports === 'always') {\n      if (currentImport.rank !== previousImport.rank\n        && getNumberOfEmptyLinesBetween(currentImport, previousImport) === 0)\n      {\n        context.report(\n          previousImport.node, 'There should be at least one empty line between import groups'\n        )\n      } else if (currentImport.rank === previousImport.rank\n        && getNumberOfEmptyLinesBetween(currentImport, previousImport) > 0)\n      {\n        context.report(\n          previousImport.node, 'There should be no empty line within import group'\n        )\n      }\n    } else {\n      if (getNumberOfEmptyLinesBetween(currentImport, previousImport) > 0) {\n        context.report(previousImport.node, 'There should be no empty line between import groups')\n      }\n    }\n\n    previousImport = currentImport\n  })\n}\n\nmodule.exports = function importOrderRule (context) {\n  const options = context.options[0] || {}\n  let ranks\n\n  try {\n    ranks = convertGroupsToRanks(options.groups || defaultGroups)\n  } catch (error) {\n    // Malformed configuration\n    return {\n      Program: function(node) {\n        context.report(node, error.message)\n      },\n    }\n  }\n  let imported = []\n  let level = 0\n\n  function incrementLevel() {\n    level++\n  }\n  function decrementLevel() {\n    level--\n  }\n\n  return {\n    ImportDeclaration: function handleImports(node) {\n      if (node.specifiers.length) { // Ignoring unassigned imports\n        const name = node.source.value\n        registerNode(context, node, name, 'import', ranks, imported)\n      }\n    },\n    CallExpression: function handleRequires(node) {\n      if (level !== 0 || !isStaticRequire(node) || !isInVariableDeclarator(node.parent)) {\n        return\n      }\n      const name = node.arguments[0].value\n      registerNode(context, node, name, 'require', ranks, imported)\n    },\n    'Program:exit': function reportAndReset() {\n      makeOutOfOrderReport(context, imported)\n\n      if ('newlines-between' in options) {\n        makeNewlinesBetweenReport(context, imported, options['newlines-between'])\n      }\n\n      imported = []\n    },\n    FunctionDeclaration: incrementLevel,\n    FunctionExpression: incrementLevel,\n    ArrowFunctionExpression: incrementLevel,\n    BlockStatement: incrementLevel,\n    ObjectExpression: incrementLevel,\n    'FunctionDeclaration:exit': decrementLevel,\n    'FunctionExpression:exit': decrementLevel,\n    'ArrowFunctionExpression:exit': decrementLevel,\n    'BlockStatement:exit': decrementLevel,\n    'ObjectExpression:exit': decrementLevel,\n  }\n}\n\nmodule.exports.schema = [\n  {\n    type: 'object',\n    properties: {\n      groups: {\n        type: 'array',\n      },\n      'newlines-between': {\n        enum: [ 'always', 'never' ],\n      },\n    },\n    additionalProperties: false,\n  },\n]\n"]}
;