| 114 | } |
| 115 | |
| 116 | export function preProcess(content) { |
| 117 | var wrapped = '(async () => {' + content + '})()'; |
| 118 | var root = parse(wrapped, { ecmaVersion: 8 }); |
| 119 | var body = root.program.body[0].expression.callee.body; |
| 120 | |
| 121 | var changes = []; |
| 122 | var containsAwait = false; |
| 123 | var containsReturn = false; |
| 124 | |
| 125 | const visitors = { |
| 126 | ClassDeclaration(node) { |
| 127 | if (node.parent === body) |
| 128 | changes.push({ |
| 129 | text: node.id.name + '=', |
| 130 | start: node.start, |
| 131 | end: node.start, |
| 132 | }); |
| 133 | }, |
| 134 | FunctionDeclaration(node) { |
| 135 | changes.push({ |
| 136 | text: node.id.name + '=', |
| 137 | start: node.start, |
| 138 | end: node.start, |
| 139 | }); |
| 140 | return node; |
| 141 | }, |
| 142 | AwaitExpression(node) { |
| 143 | containsAwait = true; |
| 144 | }, |
| 145 | ReturnStatement(node) { |
| 146 | containsReturn = true; |
| 147 | }, |
| 148 | VariableDeclaration(node) { |
| 149 | if (node.kind !== 'var' && node.parent !== body) return; |
| 150 | var onlyOneDeclaration = node.declarations.length === 1; |
| 151 | changes.push({ |
| 152 | text: onlyOneDeclaration ? 'void' : 'void (', |
| 153 | start: node.start, |
| 154 | end: node.start + node.kind.length, |
| 155 | }); |
| 156 | for (var declaration of node.declarations) { |
| 157 | if (!declaration.init) { |
| 158 | changes.push({ |
| 159 | text: '(', |
| 160 | start: declaration.start, |
| 161 | end: declaration.start, |
| 162 | }); |
| 163 | changes.push({ |
| 164 | text: '=undefined)', |
| 165 | start: declaration.end, |
| 166 | end: declaration.end, |
| 167 | }); |
| 168 | continue; |
| 169 | } |
| 170 | changes.push({ |
| 171 | text: '(', |
| 172 | start: declaration.start, |
| 173 | end: declaration.start, |