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-rw-r--r--lib/compress.js3
-rw-r--r--test/compress/yields.js65
2 files changed, 67 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js
index b35fc6a5..a0e018e3 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -9836,7 +9836,8 @@ merge(Compressor.prototype, {
}
} while (scope = scope.parent_scope);
}
- } else if (fixed.name && fixed.name.name == "await" && is_async(fixed)) {
+ } else if (fixed.name && (fixed.name.name == "await" && is_async(fixed)
+ || fixed.name.name == "yield" && is_generator(fixed))) {
single_use = false;
}
if (single_use) fixed.parent_scope = self.scope;
diff --git a/test/compress/yields.js b/test/compress/yields.js
index 5a6948ed..cd2518d6 100644
--- a/test/compress/yields.js
+++ b/test/compress/yields.js
@@ -255,6 +255,71 @@ collapse_property_lambda: {
node_version: ">=4"
}
+defun_name: {
+ input: {
+ function* yield() {
+ console.log("PASS");
+ }
+ yield().next();
+ }
+ expect: {
+ function* yield() {
+ console.log("PASS");
+ }
+ yield().next();
+ }
+ expect_stdout: "PASS"
+ node_version: ">=4"
+}
+
+drop_fname: {
+ rename = true
+ options = {
+ reduce_vars: true,
+ toplevel: true,
+ unused: true,
+ }
+ mangle = {
+ toplevel: true,
+ }
+ input: {
+ function* yield() {
+ console.log("PASS");
+ }
+ yield().next();
+ }
+ expect: {
+ (function*() {
+ console.log("PASS");
+ })().next();
+ }
+ expect_stdout: "PASS"
+ node_version: ">=4"
+}
+
+keep_fname: {
+ options = {
+ keep_fnames: true,
+ reduce_vars: true,
+ toplevel: true,
+ unused: true,
+ }
+ input: {
+ function* yield() {
+ console.log("PASS");
+ }
+ yield().next();
+ }
+ expect: {
+ function* yield() {
+ console.log("PASS");
+ }
+ yield().next();
+ }
+ expect_stdout: "PASS"
+ node_version: ">=4"
+}
+
evaluate: {
options = {
evaluate: true,