| 22 | }, |
| 23 | |
| 24 | create(context) { |
| 25 | const sourceCode = context.getSourceCode(); |
| 26 | |
| 27 | return { |
| 28 | 'CallExpression[callee.object.name="Object"][callee.property.name="assign"]': |
| 29 | function (node) { |
| 30 | const args = node.arguments; |
| 31 | if (args.length <= 1) { |
| 32 | return; |
| 33 | } |
| 34 | |
| 35 | const first = args[0]; |
| 36 | if (first.type !== 'ObjectExpression') { |
| 37 | return; |
| 38 | } |
| 39 | for (const arg of args) { |
| 40 | if (arg.type === 'SpreadElement') { |
| 41 | return; |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | context.report({ |
| 46 | node, |
| 47 | message: 'Prefer using object literals with spread property syntax', |
| 48 | |
| 49 | fix(fixer) { |
| 50 | const texts = args.map((arg) => `...${sourceCode.getText(arg)}`); |
| 51 | if (first.properties.length === 0) { |
| 52 | texts.shift(); |
| 53 | } |
| 54 | |
| 55 | return fixer.replaceText(node, `({${texts.join(',')}})`); |
| 56 | }, |
| 57 | }); |
| 58 | }, |
| 59 | }; |
| 60 | }, |
| 61 | }; |