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my-app/node_modules/terser/lib/transform.js
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my-app/node_modules/terser/lib/transform.js
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/***********************************************************************
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A JavaScript tokenizer / parser / beautifier / compressor.
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https://github.com/mishoo/UglifyJS2
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-------------------------------- (C) ---------------------------------
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Author: Mihai Bazon
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<mihai.bazon@gmail.com>
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http://mihai.bazon.net/blog
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Distributed under the BSD license:
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Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the following
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disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials
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provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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***********************************************************************/
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"use strict";
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import {
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AST_Array,
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AST_Await,
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AST_Binary,
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AST_PrivateIn,
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AST_Block,
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AST_Call,
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AST_Case,
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AST_Catch,
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AST_Chain,
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AST_Class,
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AST_ClassStaticBlock,
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AST_Conditional,
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AST_Definitions,
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AST_Destructuring,
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AST_Do,
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AST_Exit,
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AST_Expansion,
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AST_Export,
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AST_For,
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AST_ForIn,
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AST_If,
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AST_Import,
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AST_LabeledStatement,
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AST_Lambda,
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AST_LoopControl,
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AST_NameMapping,
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AST_Node,
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AST_Number,
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AST_Object,
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AST_ObjectProperty,
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AST_PrefixedTemplateString,
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AST_PropAccess,
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AST_Sequence,
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AST_SimpleStatement,
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AST_Sub,
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AST_Switch,
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AST_TemplateString,
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AST_Try,
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AST_Unary,
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AST_VarDef,
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AST_While,
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AST_With,
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AST_Yield,
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} from "./ast.js";
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import {
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MAP as do_list,
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noop,
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} from "./utils/index.js";
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function def_transform(node, descend) {
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node.DEFMETHOD("transform", function(tw, in_list) {
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let transformed = undefined;
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tw.push(this);
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if (tw.before) transformed = tw.before(this, descend, in_list);
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if (transformed === undefined) {
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transformed = this;
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descend(transformed, tw);
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if (tw.after) {
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const after_ret = tw.after(transformed, in_list);
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if (after_ret !== undefined) transformed = after_ret;
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}
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}
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tw.pop();
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return transformed;
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});
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}
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def_transform(AST_Node, noop);
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def_transform(AST_LabeledStatement, function(self, tw) {
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self.label = self.label.transform(tw);
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self.body = self.body.transform(tw);
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});
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def_transform(AST_SimpleStatement, function(self, tw) {
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self.body = self.body.transform(tw);
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});
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def_transform(AST_Block, function(self, tw) {
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self.body = do_list(self.body, tw);
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});
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def_transform(AST_Do, function(self, tw) {
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self.body = self.body.transform(tw);
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self.condition = self.condition.transform(tw);
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});
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def_transform(AST_While, function(self, tw) {
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self.condition = self.condition.transform(tw);
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self.body = self.body.transform(tw);
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});
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def_transform(AST_For, function(self, tw) {
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if (self.init) self.init = self.init.transform(tw);
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if (self.condition) self.condition = self.condition.transform(tw);
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if (self.step) self.step = self.step.transform(tw);
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self.body = self.body.transform(tw);
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});
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def_transform(AST_ForIn, function(self, tw) {
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self.init = self.init.transform(tw);
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self.object = self.object.transform(tw);
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self.body = self.body.transform(tw);
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});
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def_transform(AST_With, function(self, tw) {
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self.expression = self.expression.transform(tw);
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self.body = self.body.transform(tw);
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});
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def_transform(AST_Exit, function(self, tw) {
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if (self.value) self.value = self.value.transform(tw);
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});
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def_transform(AST_LoopControl, function(self, tw) {
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if (self.label) self.label = self.label.transform(tw);
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});
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def_transform(AST_If, function(self, tw) {
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self.condition = self.condition.transform(tw);
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self.body = self.body.transform(tw);
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if (self.alternative) self.alternative = self.alternative.transform(tw);
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});
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def_transform(AST_Switch, function(self, tw) {
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self.expression = self.expression.transform(tw);
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self.body = do_list(self.body, tw);
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});
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def_transform(AST_Case, function(self, tw) {
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self.expression = self.expression.transform(tw);
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self.body = do_list(self.body, tw);
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});
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def_transform(AST_Try, function(self, tw) {
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self.body = self.body.transform(tw);
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if (self.bcatch) self.bcatch = self.bcatch.transform(tw);
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if (self.bfinally) self.bfinally = self.bfinally.transform(tw);
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});
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def_transform(AST_Catch, function(self, tw) {
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if (self.argname) self.argname = self.argname.transform(tw);
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self.body = do_list(self.body, tw);
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});
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def_transform(AST_Definitions, function(self, tw) {
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self.definitions = do_list(self.definitions, tw);
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});
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def_transform(AST_VarDef, function(self, tw) {
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self.name = self.name.transform(tw);
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if (self.value) self.value = self.value.transform(tw);
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});
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def_transform(AST_Destructuring, function(self, tw) {
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self.names = do_list(self.names, tw);
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});
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def_transform(AST_Lambda, function(self, tw) {
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if (self.name) self.name = self.name.transform(tw);
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self.argnames = do_list(self.argnames, tw, /* allow_splicing */ false);
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if (self.body instanceof AST_Node) {
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self.body = self.body.transform(tw);
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} else {
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self.body = do_list(self.body, tw);
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}
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});
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def_transform(AST_Call, function(self, tw) {
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self.expression = self.expression.transform(tw);
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self.args = do_list(self.args, tw, /* allow_splicing */ false);
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});
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def_transform(AST_Sequence, function(self, tw) {
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const result = do_list(self.expressions, tw);
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self.expressions = result.length
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? result
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: [new AST_Number({ value: 0 })];
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});
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def_transform(AST_PropAccess, function(self, tw) {
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self.expression = self.expression.transform(tw);
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});
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def_transform(AST_Sub, function(self, tw) {
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self.expression = self.expression.transform(tw);
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self.property = self.property.transform(tw);
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});
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def_transform(AST_Chain, function(self, tw) {
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self.expression = self.expression.transform(tw);
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});
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def_transform(AST_Yield, function(self, tw) {
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if (self.expression) self.expression = self.expression.transform(tw);
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});
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def_transform(AST_Await, function(self, tw) {
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self.expression = self.expression.transform(tw);
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});
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def_transform(AST_Unary, function(self, tw) {
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self.expression = self.expression.transform(tw);
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});
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def_transform(AST_Binary, function(self, tw) {
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self.left = self.left.transform(tw);
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self.right = self.right.transform(tw);
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});
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def_transform(AST_PrivateIn, function(self, tw) {
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self.key = self.key.transform(tw);
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self.value = self.value.transform(tw);
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});
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def_transform(AST_Conditional, function(self, tw) {
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self.condition = self.condition.transform(tw);
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self.consequent = self.consequent.transform(tw);
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self.alternative = self.alternative.transform(tw);
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});
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def_transform(AST_Array, function(self, tw) {
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self.elements = do_list(self.elements, tw);
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});
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def_transform(AST_Object, function(self, tw) {
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self.properties = do_list(self.properties, tw);
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});
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def_transform(AST_ObjectProperty, function(self, tw) {
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if (self.key instanceof AST_Node) {
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self.key = self.key.transform(tw);
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}
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if (self.value) self.value = self.value.transform(tw);
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});
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def_transform(AST_Class, function(self, tw) {
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if (self.name) self.name = self.name.transform(tw);
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if (self.extends) self.extends = self.extends.transform(tw);
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self.properties = do_list(self.properties, tw);
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});
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def_transform(AST_ClassStaticBlock, function(self, tw) {
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self.body = do_list(self.body, tw);
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});
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def_transform(AST_Expansion, function(self, tw) {
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self.expression = self.expression.transform(tw);
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});
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def_transform(AST_NameMapping, function(self, tw) {
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self.foreign_name = self.foreign_name.transform(tw);
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self.name = self.name.transform(tw);
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});
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def_transform(AST_Import, function(self, tw) {
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if (self.imported_name) self.imported_name = self.imported_name.transform(tw);
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if (self.imported_names) do_list(self.imported_names, tw);
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self.module_name = self.module_name.transform(tw);
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});
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def_transform(AST_Export, function(self, tw) {
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if (self.exported_definition) self.exported_definition = self.exported_definition.transform(tw);
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if (self.exported_value) self.exported_value = self.exported_value.transform(tw);
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if (self.exported_names) do_list(self.exported_names, tw);
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if (self.module_name) self.module_name = self.module_name.transform(tw);
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});
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def_transform(AST_TemplateString, function(self, tw) {
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self.segments = do_list(self.segments, tw);
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});
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def_transform(AST_PrefixedTemplateString, function(self, tw) {
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self.prefix = self.prefix.transform(tw);
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self.template_string = self.template_string.transform(tw);
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});
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