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6 |
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7 | "use strict";
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8 |
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11 |
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12 |
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13 | module.exports = {
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14 | meta: {
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15 | docs: {
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16 | description: "disallow the unary operators `++` and `--`",
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17 | category: "Stylistic Issues",
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18 | recommended: false,
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19 | url: "https://eslint.org/docs/rules/no-plusplus"
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20 | },
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21 |
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22 | schema: [
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23 | {
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24 | type: "object",
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25 | properties: {
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26 | allowForLoopAfterthoughts: {
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27 | type: "boolean"
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28 | }
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29 | },
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30 | additionalProperties: false
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31 | }
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32 | ]
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33 | },
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34 |
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35 | create(context) {
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36 |
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37 | const config = context.options[0];
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38 | let allowInForAfterthought = false;
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39 |
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40 | if (typeof config === "object") {
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41 | allowInForAfterthought = config.allowForLoopAfterthoughts === true;
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42 | }
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43 |
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44 | return {
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45 |
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46 | UpdateExpression(node) {
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47 | if (allowInForAfterthought && node.parent.type === "ForStatement") {
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48 | return;
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49 | }
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50 | context.report({
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51 | node,
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52 | message: "Unary operator '{{operator}}' used.",
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53 | data: {
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54 | operator: node.operator
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55 | }
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56 | });
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57 | }
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58 |
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59 | };
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60 |
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61 | }
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62 | };
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