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node_modules/firebase-functions/protos/README.md

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+# Generate compiled ProtoBuf
+
+Running the script will generate statically-compiled protobufs for decoding `application/protobuf` events. Generate them by running:
+
+```
+./update.sh
+```
+
+In order to build, the following repos are cloned
+
+- https://github.com/googleapis/google-cloudevents
+- https://github.com/googleapis/googleapis
+- https://github.com/google/protobuf
+
+The script relies on the [protobufjs-cli](https://github.com/protobufjs/protobuf.js/tree/master/cli#pbts-for-typescript) package to create the compiled js/ts files.

node_modules/firebase-functions/protos/update.sh

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+#!/bin/bash
+
+# The MIT License (MIT)
+#
+# Copyright (c) 2023 Firebase
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# vars
+PROTOS_DIR="$(pwd)"
+WORK_DIR=`mktemp -d`
+
+# deletes the temp directory on exit
+function cleanup {
+  rm -rf "$WORK_DIR"
+  echo "Deleted temp working directory $WORK_DIR"
+  rm -rf "${PROTOS_DIR}/data.proto" "${PROTOS_DIR}/any.proto" "${PROTOS_DIR}/google"
+  echo "Deleted copied protos"
+}
+
+# register the cleanup function to be called on the EXIT signal
+trap cleanup EXIT
+
+# Capture location of pbjs / pbts before we pushd.
+PBJS="$(npm bin)/pbjs"
+PBTS="$(npm bin)/pbts"
+
+# enter working directory
+pushd "$WORK_DIR"
+
+git clone --depth 1 https://github.com/googleapis/google-cloudevents.git
+git clone --depth 1 https://github.com/googleapis/googleapis.git
+git clone --depth 1 https://github.com/google/protobuf.git
+
+# make dirs
+mkdir -p "${PROTOS_DIR}/google/type"
+
+# copy protos
+cp google-cloudevents/proto/google/events/cloud/firestore/v1/data.proto \
+  "${PROTOS_DIR}/"
+
+cp protobuf/src/google/protobuf/any.proto \
+  "${PROTOS_DIR}/"
+
+cp protobuf/src/google/protobuf/struct.proto \
+  "${PROTOS_DIR}/google/"
+
+cp protobuf/src/google/protobuf/timestamp.proto \
+  "${PROTOS_DIR}/google/"
+
+cp googleapis/google/type/latlng.proto \
+  "${PROTOS_DIR}/google/type/"
+
+popd
+
+"${PBJS}" -t static-module -w commonjs -o compiledFirestore.js \
+  data.proto any.proto
+
+"${PBTS}" -o compiledFirestore.d.ts compiledFirestore.js