1 |
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2 |
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3 |
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4 |
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5 |
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6 | "use strict";
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7 |
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8 | module.exports = expr => {
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9 |
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10 | if (
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11 | expr.type === "FunctionExpression" ||
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12 | expr.type === "ArrowFunctionExpression"
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13 | ) {
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14 | return {
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15 | fn: expr,
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16 | expressions: [],
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17 | needThis: false
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18 | };
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19 | }
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20 |
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21 |
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22 | if (
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23 | expr.type === "CallExpression" &&
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24 | expr.callee.type === "MemberExpression" &&
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25 | expr.callee.object.type === "FunctionExpression" &&
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26 | expr.callee.property.type === "Identifier" &&
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27 | expr.callee.property.name === "bind" &&
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28 | expr.arguments.length === 1
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29 | ) {
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30 | return {
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31 | fn: expr.callee.object,
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32 | expressions: [expr.arguments[0]],
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33 | needThis: undefined
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34 | };
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35 | }
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36 |
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37 | if (
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38 | expr.type === "CallExpression" &&
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39 | expr.callee.type === "FunctionExpression" &&
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40 | expr.callee.body.type === "BlockStatement" &&
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41 | expr.arguments.length === 1 &&
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42 | expr.arguments[0].type === "ThisExpression" &&
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43 | expr.callee.body.body &&
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44 | expr.callee.body.body.length === 1 &&
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45 | expr.callee.body.body[0].type === "ReturnStatement" &&
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46 | expr.callee.body.body[0].argument &&
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47 | expr.callee.body.body[0].argument.type === "FunctionExpression"
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48 | ) {
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49 | return {
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50 | fn: expr.callee.body.body[0].argument,
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51 | expressions: [],
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52 | needThis: true
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53 | };
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54 | }
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55 | };
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