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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| /** | ||
| * @fileoverview Enforce propTypes declarations alphabetical sorting | ||
| */ | ||
| 'use strict'; | ||
|
|
||
| // ------------------------------------------------------------------------------ | ||
| // Rule Definition | ||
| // ------------------------------------------------------------------------------ | ||
|
|
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| module.exports = function(context) { | ||
|
|
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| var configuration = context.options[0] || {}; | ||
| var requiredFirst = configuration.requiredFirst || false; | ||
| var callbacksLast = configuration.callbacksLast || false; | ||
| var ignoreCase = configuration.ignoreCase || false; | ||
|
|
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| /** | ||
| * Checks if node is `propTypes` declaration | ||
| * @param {ASTNode} node The AST node being checked. | ||
| * @returns {Boolean} True if node is `propTypes` declaration, false if not. | ||
| */ | ||
| function isPropTypesDeclaration(node) { | ||
|
|
||
| // Special case for class properties | ||
| // (babel-eslint does not expose property name so we have to rely on tokens) | ||
| if (node.type === 'ClassProperty') { | ||
| var tokens = context.getFirstTokens(node, 2); | ||
| return (tokens[0] && tokens[0].value === 'propTypes') || | ||
| (tokens[1] && tokens[1].value === 'propTypes'); | ||
| } | ||
|
|
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| return Boolean( | ||
| node && | ||
| node.name === 'propTypes' | ||
| ); | ||
| } | ||
|
|
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| function getKey(node) { | ||
| return node.key.type === 'Identifier' ? node.key.name : node.key.value; | ||
| } | ||
|
|
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| function getValueName(node) { | ||
| return node.value.property && node.value.property.name; | ||
| } | ||
|
|
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| function isCallbackPropName(propName) { | ||
| return /^on[A-Z]/.test(propName); | ||
| } | ||
|
|
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| function isRequiredProp(node) { | ||
| return getValueName(node) === 'isRequired'; | ||
| } | ||
|
|
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| /** | ||
| * Checks if propTypes declarations are sorted | ||
| * @param {Array} declarations The array of AST nodes being checked. | ||
| * @returns {void} | ||
| */ | ||
| function checkSorted(declarations) { | ||
| declarations.reduce(function(prev, curr) { | ||
| var prevPropName = getKey(prev); | ||
| var currentPropName = getKey(curr); | ||
| var previousIsRequired = isRequiredProp(prev); | ||
| var currentIsRequired = isRequiredProp(curr); | ||
| var previousIsCallback = isCallbackPropName(prevPropName); | ||
| var currentIsCallback = isCallbackPropName(currentPropName); | ||
|
|
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| if (ignoreCase) { | ||
| prevPropName = prevPropName.toLowerCase(); | ||
| currentPropName = currentPropName.toLowerCase(); | ||
| } | ||
|
|
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| if (requiredFirst) { | ||
| if (previousIsRequired && !currentIsRequired) { | ||
| // Transition between required and non-required. Don't compare for alphabetical. | ||
| return curr; | ||
| } | ||
| if (!previousIsRequired && currentIsRequired) { | ||
| // Encountered a non-required prop after a required prop | ||
| context.report({ | ||
| node: curr, | ||
| message: 'Required prop types must be listed before all other prop types' | ||
| }); | ||
| return curr; | ||
| } | ||
| } | ||
|
|
||
| if (callbacksLast) { | ||
| if (!previousIsCallback && currentIsCallback) { | ||
| // Entering the callback prop section | ||
| return curr; | ||
| } | ||
| if (previousIsCallback && !currentIsCallback) { | ||
| // Encountered a non-callback prop after a callback prop | ||
| context.report({ | ||
| node: prev, | ||
| message: 'Callback prop types must be listed after all other prop types' | ||
| }); | ||
| return prev; | ||
| } | ||
| } | ||
|
|
||
| if (currentPropName < prevPropName) { | ||
| context.report({ | ||
| node: curr, | ||
| message: 'Prop types declarations should be sorted alphabetically' | ||
| }); | ||
| return prev; | ||
| } | ||
|
|
||
| return curr; | ||
| }, declarations[0]); | ||
| } | ||
|
|
||
| return { | ||
| ClassProperty: function(node) { | ||
| if (isPropTypesDeclaration(node) && node.value && node.value.type === 'ObjectExpression') { | ||
| checkSorted(node.value.properties); | ||
| } | ||
| }, | ||
|
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| MemberExpression: function(node) { | ||
| if (isPropTypesDeclaration(node.property)) { | ||
| var right = node.parent.right; | ||
| if (right && right.type === 'ObjectExpression') { | ||
| checkSorted(right.properties); | ||
| } | ||
| } | ||
| }, | ||
|
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| ObjectExpression: function(node) { | ||
| node.properties.forEach(function(property) { | ||
| if (!property.key) { | ||
| return; | ||
| } | ||
|
|
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| if (!isPropTypesDeclaration(property.key)) { | ||
| return; | ||
| } | ||
| if (property.value.type === 'ObjectExpression') { | ||
| checkSorted(property.value.properties); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| }; | ||
| }; | ||
|
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| module.exports.schema = [{ | ||
| type: 'object', | ||
| properties: { | ||
| requiredFirst: { | ||
| type: 'boolean' | ||
| }, | ||
| callbacksLast: { | ||
| type: 'boolean' | ||
| }, | ||
| ignoreCase: { | ||
| type: 'boolean' | ||
| } | ||
| }, | ||
| additionalProperties: false | ||
| }]; |
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