1 | "use strict";
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | const util_1 = require("../util");
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4 | const utils_1 = require("@typescript-eslint/utils");
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5 | exports.default = (0, util_1.createRule)({
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6 | name: 'default-param-last',
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7 | meta: {
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8 | type: 'suggestion',
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9 | docs: {
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10 | description: 'Enforce default parameters to be last',
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11 | recommended: false,
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12 | extendsBaseRule: true,
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13 | },
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14 | schema: [],
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15 | messages: {
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16 | shouldBeLast: 'Default parameters should be last.',
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17 | },
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18 | },
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19 | defaultOptions: [],
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20 | create(context) {
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21 | |
22 |
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23 |
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24 |
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25 |
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26 | function isOptionalParam(node) {
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27 | return 'optional' in node && node.optional === true;
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28 | }
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29 | |
30 |
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31 |
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32 |
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33 |
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34 | function isPlainParam(node) {
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35 | return !(node.type === utils_1.AST_NODE_TYPES.AssignmentPattern ||
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36 | node.type === utils_1.AST_NODE_TYPES.RestElement ||
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37 | isOptionalParam(node));
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38 | }
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39 | function checkDefaultParamLast(node) {
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40 | let hasSeenPlainParam = false;
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41 | for (let i = node.params.length - 1; i >= 0; i--) {
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42 | const current = node.params[i];
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43 | const param = current.type === utils_1.AST_NODE_TYPES.TSParameterProperty
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44 | ? current.parameter
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45 | : current;
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46 | if (isPlainParam(param)) {
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47 | hasSeenPlainParam = true;
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48 | continue;
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49 | }
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50 | if (hasSeenPlainParam &&
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51 | (isOptionalParam(param) ||
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52 | param.type === utils_1.AST_NODE_TYPES.AssignmentPattern)) {
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53 | context.report({ node: current, messageId: 'shouldBeLast' });
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54 | }
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55 | }
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56 | }
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57 | return {
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58 | ArrowFunctionExpression: checkDefaultParamLast,
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59 | FunctionDeclaration: checkDefaultParamLast,
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60 | FunctionExpression: checkDefaultParamLast,
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61 | };
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62 | },
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63 | });
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64 |
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