Bump min supported node version from 10.19 to 12.20

This is the minimum node version that we support targeting.  Bumping
to v12.20 specifically allows us to start using `node:xx` for imports.
See emscripten-core#18235

Author: sbc100

.circleci/config.yml

@@ -774,10 +774,10 @@ jobs:
       # support in the generated code.
       # Keep this in sync with `OLDEST_SUPPORTED_NODE` in `feature_matrix.py`
       - install-node-version:
-          node_version: "10.19.0"
+          node_version: "12.20.0"
       - run-tests:
-          title: "node (oldest / 10.19.0)"
-          extra-cflags: "-sMIN_NODE_VERSION=101900"
+          title: "node (oldest / 12.20.0)"
+          extra-cflags: "-sMIN_NODE_VERSION=122000"
           # We include most but not all of the nodefs and node rawfs tests here.
           # test_fs_nodefs_rw, test_fs_nodefs_statvfs, and test_unistd_io_nodefs_bigint fail.
           test_targets: "

src/settings.js

@@ -1929,7 +1929,7 @@ var MIN_CHROME_VERSION = 85;
 // distinct from the minimum version required run the emscripten compiler.
 // This version aligns with the current Ubuuntu TLS 20.04 (Focal).
 // Version is encoded in MMmmVV, e.g. 181401 denotes Node 18.14.01.
-// Minimum supported value is 101900, which was released 2020-02-05 (see
+// Minimum supported value is 122000, which was released 2020-11-25 (see
 // feature_matrix.py).
 var MIN_NODE_VERSION = 160000;
 

tools/feature_matrix.py

@@ -21,9 +21,8 @@
 OLDEST_SUPPORTED_CHROME = 45  # September 1, 2015
 OLDEST_SUPPORTED_FIREFOX = 40  # August 11, 2015
 OLDEST_SUPPORTED_SAFARI = 101000  # September 20, 2016
-# 10.19.0 is the oldest version of node that we do any testing with.
 # Keep this in sync with the test-node-compat in .circleci/config.yml.
-OLDEST_SUPPORTED_NODE = 101900
+OLDEST_SUPPORTED_NODE = 122000
 
 
 class Feature(IntEnum):