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scripts/fantom.sh
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Rubén Norte
Cap maxWorkers and bump heap to bound Fantom Metro memory (#56529)
21 апр 2026, 16:01
21 апр 2026, 16:01
0f9b8e4
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#!/bin/bash # Copyright (c) Meta Platforms, Inc. and affiliates. # # This source code is licensed under the MIT license found in the # LICENSE file in the root directory of this source tree. set -e if [[ -f "BUCK" && -z "$FANTOM_FORCE_OSS_BUILD" ]]; then export JS_DIR='..' else if [[ ! -f "private/react-native-fantom/build/tester/fantom_tester" ]]; then yarn workspace @react-native/fantom build fi export FANTOM_FORCE_OSS_BUILD=1 fi # The Fantom Jest process hosts a single shared Metro server. Each test # triggers a fresh Metro bundle build whose dependency graph (transformed # modules, source maps, inverse-deps, file-watcher subscription) lives in # memory until the per-test DELETE evicts it. With the maxWorkers cap in # jest.config.js (~16 in-flight bundles at peak), 16 GB gives ~40% heap # headroom over the observed steady state of ~6 GB. export NODE_OPTIONS='--max-old-space-size=16384' # Parse arguments to extract custom flags ARGS=() for arg in "$@"; do case "$arg" in --benchmarks) export FANTOM_RUN_BENCHMARKS=1 ;; *) ARGS+=("$arg") ;; esac done if [[ -n "$FANTOM_RUN_BENCHMARKS" ]]; then ARGS+=("--runInBand") fi yarn jest --config private/react-native-fantom/config/jest.config.js "${ARGS[@]}"