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- /*
- MIT License http://www.opensource.org/licenses/mit-license.php
- Author Tobias Koppers @sokra
- */
- module.exports = function(expr) {
- // <FunctionExpression>
- if(expr.type === "FunctionExpression" || expr.type === "ArrowFunctionExpression") {
- return {
- fn: expr,
- expressions: [],
- needThis: false
- };
- }
-
- // <FunctionExpression>.bind(<Expression>)
- if(expr.type === "CallExpression" &&
- expr.callee.type === "MemberExpression" &&
- expr.callee.object.type === "FunctionExpression" &&
- expr.callee.property.type === "Identifier" &&
- expr.callee.property.name === "bind" &&
- expr.arguments.length === 1) {
- return {
- fn: expr.callee.object,
- expressions: [expr.arguments[0]]
- };
- }
- // (function(_this) {return <FunctionExpression>})(this) (Coffeescript)
- if(expr.type === "CallExpression" &&
- expr.callee.type === "FunctionExpression" &&
- expr.callee.body.type === "BlockStatement" &&
- expr.arguments.length === 1 &&
- expr.arguments[0].type === "ThisExpression" &&
- expr.callee.body.body &&
- expr.callee.body.body.length === 1 &&
- expr.callee.body.body[0].type === "ReturnStatement" &&
- expr.callee.body.body[0].argument &&
- expr.callee.body.body[0].argument.type === "FunctionExpression") {
- return {
- fn: expr.callee.body.body[0].argument,
- expressions: [],
- needThis: true
- };
- }
- };
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