* Add a chunk of generated JS to the beginning of this source node. * * @param aChunk A string snippet of generated JS code, another instance of * SourceNode, or an array where each member is one of those things.
(aChunk)
| 210 | * SourceNode, or an array where each member is one of those things. |
| 211 | */ |
| 212 | prepend(aChunk) { |
| 213 | if (Array.isArray(aChunk)) { |
| 214 | for (let i = aChunk.length - 1; i >= 0; i--) { |
| 215 | this.prepend(aChunk[i]); |
| 216 | } |
| 217 | } else if (aChunk[isSourceNode] || typeof aChunk === "string") { |
| 218 | this.children.unshift(aChunk); |
| 219 | } else { |
| 220 | throw new TypeError( |
| 221 | "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + |
| 222 | aChunk |
| 223 | ); |
| 224 | } |
| 225 | return this; |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * Walk over the tree of JS snippets in this node and its children. The |