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-rw-r--r--platform/javascript/detect.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/platform/javascript/detect.py b/platform/javascript/detect.py
index 7bf3e1bc1d..1766833364 100644
--- a/platform/javascript/detect.py
+++ b/platform/javascript/detect.py
@@ -131,6 +131,11 @@ def configure(env):
env.Append(LINKFLAGS=['-s', 'BINARYEN=1'])
+ # Only include the JavaScript support code for the web environment
+ # (i.e. exclude Node.js and other unused environments).
+ # This makes the JavaScript support code about 4 KB smaller.
+ env.Append(LINKFLAGS=['-s', 'ENVIRONMENT=web'])
+
# This needs to be defined for Emscripten using 'fastcomp' (default pre-1.39.0)
# and undefined if using 'upstream'. And to make things simple, earlier
# Emscripten versions didn't include 'fastcomp' in their path, so we check