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61 lines
1.9 KiB
Plaintext
61 lines
1.9 KiB
Plaintext
'use strict';
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var utils = require('../utils.js');
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require('eslint-visitor-keys');
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require('espree');
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require('estraverse');
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var implicitArrowLinebreak = utils.createRule({
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name: "implicit-arrow-linebreak",
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package: "js",
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meta: {
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type: "layout",
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docs: {
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description: "Enforce the location of arrow function bodies"
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},
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fixable: "whitespace",
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schema: [
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{
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type: "string",
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enum: ["beside", "below"]
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}
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],
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messages: {
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expected: "Expected a linebreak before this expression.",
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unexpected: "Expected no linebreak before this expression."
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}
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},
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create(context) {
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const sourceCode = context.sourceCode;
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const option = context.options[0] || "beside";
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function validateExpression(node) {
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if (node.body.type === "BlockStatement")
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return;
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const arrowToken = sourceCode.getTokenBefore(node.body, utils.isNotOpeningParenToken);
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const firstTokenOfBody = sourceCode.getTokenAfter(arrowToken);
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if (arrowToken.loc.end.line === firstTokenOfBody.loc.start.line && option === "below") {
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context.report({
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node: firstTokenOfBody,
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messageId: "expected",
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fix: (fixer) => fixer.insertTextBefore(firstTokenOfBody, "\n")
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});
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} else if (arrowToken.loc.end.line !== firstTokenOfBody.loc.start.line && option === "beside") {
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context.report({
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node: firstTokenOfBody,
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messageId: "unexpected",
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fix(fixer) {
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if (sourceCode.getFirstTokenBetween(arrowToken, firstTokenOfBody, { includeComments: true, filter: utils.isCommentToken }))
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return null;
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return fixer.replaceTextRange([arrowToken.range[1], firstTokenOfBody.range[0]], " ");
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}
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});
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}
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}
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return {
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ArrowFunctionExpression: (node) => validateExpression(node)
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};
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}
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});
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module.exports = implicitArrowLinebreak;
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