cerxes/babel
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

move up template literal simplification logic - fixes #1874

Browse Source
This commit is contained in:
Sebastian McKenzie
2015-06-29 23:36:06 +01:00
parent d63ae5fce8
commit e55ce575cd
3 changed files with 11 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
src/babel/transformation/transformers/es6/template-literals.js
View File

@@ -60,20 +60,16 @@ export var visitor = {
if (expr) nodes.push(expr);
}
// filter out empty string literals
nodes = nodes.filter(n => !t.isLiteral(n, { value: "" }));
// since `+` is left-to-right associative
// ensure the first node is a string if first/second isn't
if (!isString(nodes[0]) && !isString(nodes[1])) {
nodes.unshift(t.literal(""));
}
if (nodes.length > 1) {
// filter out empty string literals
nodes = nodes.filter(n => !t.isLiteral(n, { value: "" }));
if (nodes.length === 1 && isString(nodes[0])) {
return nodes[0];
}
// since `+` is left-to-right associative
// ensure the first node is a string if first/second isn't
if (!isString(nodes[0]) && !isString(nodes[1])) {
nodes.unshift(t.literal(""));
}
var root = buildBinaryExpression(nodes.shift(), nodes.shift());
for (let node of (nodes: Array)) {