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| 1 | +/** |
| 2 | + * @fileoverview Require all forwardRef components include a ref parameter |
| 3 | + */ |
| 4 | + |
| 5 | +'use strict'; |
| 6 | + |
| 7 | +const isParenthesized = require('../util/ast').isParenthesized; |
| 8 | +const docsUrl = require('../util/docsUrl'); |
| 9 | +const report = require('../util/report'); |
| 10 | +const getMessageData = require('../util/message'); |
| 11 | + |
| 12 | +// ------------------------------------------------------------------------------ |
| 13 | +// Rule Definition |
| 14 | +// ------------------------------------------------------------------------------ |
| 15 | + |
| 16 | +/** |
| 17 | + * @param {ASTNode} node |
| 18 | + * @returns {boolean} If the node represents the identifier `forwardRef`. |
| 19 | + */ |
| 20 | +function isForwardRefIdentifier(node) { |
| 21 | + return node.type === 'Identifier' && node.name === 'forwardRef'; |
| 22 | +} |
| 23 | + |
| 24 | +/** |
| 25 | + * @param {ASTNode} node |
| 26 | + * @returns {boolean} If the node represents a function call `forwardRef()` or `React.forwardRef()`. |
| 27 | + */ |
| 28 | +function isForwardRefCall(node) { |
| 29 | + return ( |
| 30 | + node.type === 'CallExpression' |
| 31 | + && ( |
| 32 | + isForwardRefIdentifier(node.callee) |
| 33 | + || (node.callee.type === 'MemberExpression' && isForwardRefIdentifier(node.callee.property)) |
| 34 | + ) |
| 35 | + ); |
| 36 | +} |
| 37 | + |
| 38 | +const messages = { |
| 39 | + missingRefParameter: 'forwardRef is used with this component but no ref parameter is set', |
| 40 | + addRefParameter: 'Add a ref parameter', |
| 41 | + removeForwardRef: 'Remove forwardRef wrapper', |
| 42 | +}; |
| 43 | + |
| 44 | +module.exports = { |
| 45 | + meta: { |
| 46 | + docs: { |
| 47 | + description: 'Require all forwardRef components include a ref parameter', |
| 48 | + category: 'Possible Errors', |
| 49 | + recommended: false, |
| 50 | + url: docsUrl('forward-ref-uses-ref'), |
| 51 | + }, |
| 52 | + messages, |
| 53 | + schema: [], |
| 54 | + type: 'suggestion', |
| 55 | + hasSuggestions: true, |
| 56 | + }, |
| 57 | + |
| 58 | + create(context) { |
| 59 | + const sourceCode = context.getSourceCode(); |
| 60 | + |
| 61 | + return { |
| 62 | + 'FunctionExpression, ArrowFunctionExpression'(node) { |
| 63 | + if (!isForwardRefCall(node.parent)) { |
| 64 | + return; |
| 65 | + } |
| 66 | + |
| 67 | + if (node.params.length === 1) { |
| 68 | + report(context, messages.missingRefParameter, 'missingRefParameter', { |
| 69 | + node, |
| 70 | + suggest: [ |
| 71 | + Object.assign( |
| 72 | + getMessageData('addRefParameter', messages.addRefParameter), |
| 73 | + { |
| 74 | + fix(fixer) { |
| 75 | + const param = node.params[0]; |
| 76 | + // If using shorthand arrow function syntax, add parentheses around the new parameter pair |
| 77 | + const shouldAddParentheses = node.type === 'ArrowFunctionExpression' && !isParenthesized(context, param); |
| 78 | + return [].concat( |
| 79 | + shouldAddParentheses ? fixer.insertTextBefore(param, '(') : [], |
| 80 | + fixer.insertTextAfter(param, `, ref${shouldAddParentheses ? ')' : ''}`) |
| 81 | + ); |
| 82 | + }, |
| 83 | + } |
| 84 | + ), |
| 85 | + Object.assign( |
| 86 | + getMessageData('removeForwardRef', messages.removeForwardRef), |
| 87 | + { |
| 88 | + fix(fixer) { |
| 89 | + return fixer.replaceText(node.parent, sourceCode.getText(node)); |
| 90 | + }, |
| 91 | + } |
| 92 | + ), |
| 93 | + ], |
| 94 | + }); |
| 95 | + } |
| 96 | + }, |
| 97 | + }; |
| 98 | + }, |
| 99 | +}; |
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