evasive-transform minor whitespace inconsistencies in output

[naugtur]

Turns out that this lost space stems from generation against our locationless synthetic AST nodes, and it's fairly easy to fix:

diff --git i/packages/evasive-transform/src/transform-code.js w/packages/evasive-transform/src/trans
form-code.js
index 1ef096d9d..f186e7ee5 100644
--- i/packages/evasive-transform/src/transform-code.js
+++ w/packages/evasive-transform/src/transform-code.js
@@ -1,6 +1,32 @@
 const evadeRegexp = /import\s*\(|<!--|-->/g;
 const importRegexp = /import(\s*\()/g;
 
+/**
+ * Copy the location from one AST node to another (round-tripping through JSON
+ * to sever references), updating the target's end position as if it had zero
+ * length.
+ *
+ * @param {import('@babel/types').Node} target
+ * @param {import('@babel/types').Node} src
+ */
+const adoptStartFrom = (target, src) => {
+  try {
+    const srcLoc = src.loc;
+    if (!srcLoc) return;
+    const loc = /** @type {typeof srcLoc} */ (
+      JSON.parse(JSON.stringify(srcLoc))
+    );
+    const start = loc?.start;
+    target.loc = loc;
+    if (!start) return;
+    target.loc.end = /** @type {typeof start} */ (
+      JSON.parse(JSON.stringify(start))
+    );
+  } catch (_err) {
+    // Ignore errors; this is purely opportunistic.
+  }
+};
+
 /**
  * Creates a BinaryExpression adding two expressions
  *
@@ -36,6 +62,7 @@ export const evadeStrings = p => {
     expr = !expr
       ? { type: 'StringLiteral', value: part }
       : addStringToExpressions(expr, part);
+    if (lastIndex === 0) adoptStartFrom(expr, p.node);
     lastIndex = index;
   }
   if (expr) {
@@ -128,11 +155,14 @@ export const evadeTemplates = p => {
     newQuasis[newQuasis.length - 1].tail = true;
   }
 
-  p.replaceWith({
+  /** @type {import('@babel/types').Node} */
+  const replacement = {
     type: 'TemplateLiteral',
     quasis: newQuasis,
     expressions: newExpressions,
-  });
+  };
+  adoptStartFrom(replacement, p.node);
+  p.replaceWith(replacement);
 };
 
 /**

Originally posted by @gibson042 in #3026 (comment)