fix: expose exports of all entry modules in library output - #21661

#!/bin/bash
rg -nP -C4 'AbstractLibraryPluginOptions|finishAllEntryModules' types.d.ts declarations.d.ts 2>/dev/null
rg -nP -C3 'AbstractLibraryPlugin' lib/index.js

#!/bin/bash
set -eu

printf '%s\n' '--- source typedef and option usage ---'
rg -n -P -C8 'AbstractLibraryPluginOptions|finishAllEntryModules' lib/library/AbstractLibraryPlugin.js lib/index.js

printf '%s\n' '--- generated declaration option ---'
rg -n -P -C12 'declare interface AbstractLibraryPluginOptions|finishAllEntryModules' types.d.ts declarations.d.ts 2>/dev/null || true

printf '%s\n' '--- repository generation metadata ---'
rg -n -P -C3 'types\.d\.ts|yarn fix|declarations' package.json scripts tooling lib/index.js 2>/dev/null | head -200

#!/bin/bash
# Inspect how other code distinguishes delayed startup from extra entrypoint chunks.
rg -nP -C6 'getChunkEntryModulesWithChunkGroupIterable' --type=js lib/
rg -nP -C6 'delayed|startup.*delay|getRuntimeChunk\(\)' --type=js lib/javascript/JavascriptModulesPlugin.js

#!/bin/bash
sed -n '250,330p' lib/library/AbstractLibraryPlugin.js
sed -n '1490,1565p' lib/javascript/JavascriptModulesPlugin.js
rg -n -C4 'runtimeChunk|splitChunks|array.*entry|entry.*array|merge.*entry|_getMergeableEntryModules' test lib | head -240

#!/bin/bash
printf '%s\n' '--- library tests and fixtures ---'
rg -n -i -C3 'library|entry.*array|array.*entry|runtimeChunk|splitChunks' test/configCases test/Defaults.unittest.js test | rg -i 'library|entry|runtimeChunk|splitChunks' | head -300
printf '%s\n' '--- entrypoint and runtime-chunk implementation ---'
rg -n -C5 'getRuntimeChunk|runtimeChunk|chunks =|this\\.chunks' lib/Entrypoint.js lib | head -300
printf '%s\n' '--- merge call sites ---'
rg -n -C8 '_renderEntryExportsMerge|_getMergeableEntryModules' lib test

#!/bin/bash
printf '%s\n' '--- issue-15936 case ---'
cat -n test/configCases/library/issue-15936-entry-array-exports/webpack.config.js
cat -n test/configCases/library/issue-15936-entry-array-exports/index.js
find test/configCases/library/issue-15936-entry-array-exports -maxdepth 2 -type f -print
printf '%s\n' '--- runtime chunk and entrypoint chunk-group wiring ---'
rg -n -C5 'setRuntimeChunk|setEntrypointChunk|addChunk\\(' lib | rg -C5 'Entrypoint|runtime|entrypoint|chunkGroup' | head -220
printf '%s\n' '--- relevant Entrypoint methods ---'
cat -n lib/Entrypoint.js | sed -n '1,145p'
printf '%s\n' '--- chunk-group chunk ordering methods ---'
rg -n -C5 'addChunk|insertChunk|chunks' lib/ChunkGroup.js lib/Compilation.js | head -220

#!/bin/bash
printf '%s\n' '--- runtime chunk wiring ---'
rg -n -C6 'setRuntimeChunk|setEntrypointChunk' lib
printf '%s\n' '--- entrypoint chunk creation ---'
rg -n -C8 'new Entrypoint|entrypoint\\.pushChunk|entrypoint\\.unshiftChunk|entrypoint\\.insertChunk|chunkGroup\\.pushChunk' lib | head -260
printf '%s\n' '--- relevant library snapshots ---'
find test/configCases/library -maxdepth 3 -type f \( -name '*snap*' -o -name '*.js' \) | rg 'issue-15936|runtime-chunk|type-assign' | sort

#!/bin/bash
printf '%s\n' '--- initial entrypoint creation and runtime chunk insertion ---'
sed -n '3515,3685p' lib/Compilation.js
printf '%s\n' '--- library merge call context ---'
rg -n '_renderEntryExportsMerge|renderEntryExportsMerge|merge exports of all entry modules' lib/library lib
printf '%s\n' '--- split-chunk group connection ---'
rg -n -C8 'insertChunk|pushChunk|addChunkInGroup|addChunk.*chunkGroup|chunkGroup.*addChunk' lib/optimize/SplitChunksPlugin.js lib | head -260
printf '%s\n' '--- entrypoint chunk consumers ---'
rg -n -C4 'getEntrypointChunk\\(\\)|entrypoint\\.chunks' lib | head -260

#!/bin/bash
printf '%s\n' '--- library render hooks ---'
sed -n '280,355p' lib/library/AssignLibraryPlugin.js
sed -n '85,145p' lib/library/ExportPropertyLibraryPlugin.js
printf '%s\n' '--- chunk rendering and runtime handling ---'
rg -n -C8 'renderContext|entrypoint.*getEntrypointChunk|hasRuntime\\(\\)|getChunkInfo' lib/javascript/JavascriptModulesPlugin.js lib/library
printf '%s\n' '--- split chunk implementation around Chunk.split callers ---'
rg -n -C12 '\\.split\\(' lib/optimize/SplitChunksPlugin.js lib | head -220

#!/bin/bash
python3 - <<'PY'
from pathlib import Path

abstract = Path("lib/library/AbstractLibraryPlugin.js").read_text()
compilation = Path("lib/Compilation.js").read_text()
chunk = Path("lib/Chunk.js").read_text()

assert 'entrypoint.chunks.some((c) => c !== chunk)' in abstract
runtime_setup = 'entry.unshiftChunk(chunk);'
assert runtime_setup in compilation
assert 'entry.setRuntimeChunk(chunk);' in compilation
assert 'chunkGroup.insertChunk(newChunk, this);' in chunk

# Model the chunk-group shapes established by the source:
# a separate runtime chunk is unshifted; split chunks are inserted before
# the entry chunk. Both make the current predicate return true.
entry = object()
runtime = object()
split = object()

def rejects_merge(group, current):
    return any(candidate is not current for candidate in group)

cases = {
    "separate runtime chunk": ([runtime, entry], entry),
    "runtime plus initial split chunk": ([runtime, split, entry], entry),
    "single entry chunk": ([entry], entry),
}
for name, (group, current) in cases.items():
    print(name, "=>", rejects_merge(group, current))

assert rejects_merge(*cases["separate runtime chunk"])
assert rejects_merge(*cases["runtime plus initial split chunk"])
assert not rejects_merge(*cases["single entry chunk"])
PY

#!/bin/bash
python3 - <<'PY'
from pathlib import Path

abstract = Path("lib/library/AbstractLibraryPlugin.js").read_text()
compilation = Path("lib/Compilation.js").read_text()
chunk = Path("lib/Chunk.js").read_text()

assert 'entrypoint.chunks.some((c) => c !== chunk)' in abstract
assert 'entry.unshiftChunk(chunk);' in compilation
assert 'entry.setRuntimeChunk(chunk);' in compilation
assert 'chunkGroup.insertChunk(newChunk, this);' in chunk

entry = object()
runtime = object()
split = object()

def rejects_merge(group, current):
    return any(candidate is not current for candidate in group)

cases = {
    "separate runtime chunk": ([runtime, entry], entry),
    "runtime plus initial split chunk": ([runtime, split, entry], entry),
    "single entry chunk": ([entry], entry),
}
for name, (group, current) in cases.items():
    print(name, "=>", rejects_merge(group, current))

assert rejects_merge(*cases["separate runtime chunk"])
assert rejects_merge(*cases["runtime plus initial split chunk"])
assert not rejects_merge(*cases["single entry chunk"])
PY

#!/bin/bash
# Check the declared return type of ChunkGraph#getModuleId.
ast-grep run --pattern 'getModuleId($_) { $$$ }' --lang javascript lib/ChunkGraph.js
rg -nP -B8 'getModuleId\(module\)\s*\{' lib/ChunkGraph.js

#!/bin/bash
sed -n '1490,1555p' lib/ChunkGraph.js
sed -n '300,375p' lib/library/AbstractLibraryPlugin.js
rg -n "getModuleId\\(|__webpack_merge_entry__|merge.*entry|entryModule" lib test

#!/bin/bash
printf '%s\n' '--- ChunkGraph#getModuleId ---'
sed -n '1515,1565p' lib/ChunkGraph.js
printf '%s\n' '--- AbstractLibraryPlugin call site ---'
sed -n '330,365p' lib/library/AbstractLibraryPlugin.js
printf '%s\n' '--- merge-entry references in source ---'
rg -n --glob 'lib/**/*.js' --glob 'test/**/*.js' --glob '!test/**/*.snap' '__webpack_merge_entry__|merge_entry|getModuleId\\(module\\)' lib test | head -200
printf '%s\n' '--- module ID assignment paths ---'
rg -n --glob 'lib/**/*.js' 'setModuleId|getModuleId\\(' lib/ChunkGraph.js lib | head -250

#!/bin/bash
printf '%s\n' '--- AbstractLibraryPlugin surrounding method ---'
sed -n '250,380p' lib/library/AbstractLibraryPlugin.js
printf '%s\n' '--- ChunkGraph ID reads and writes ---'
rg -n --glob 'lib/**/*.js' 'setModuleId|getModuleId\\(' lib | head -300
printf '%s\n' '--- entry rendering call graph ---'
rg -n --glob 'lib/**/*.js' 'renderStartup|render.*Startup|render.*Chunk|renderChunk|renderMain|startupRender' lib | head -250
printf '%s\n' '--- relevant tests ---'
rg -n --glob 'test/**/*.js' 'merge.*entry|multiple.*entry|library.*entry|export.*merge' test | head -200

#!/bin/bash
printf '%s\n' '--- all module ID writes ---'
rg -n --glob 'lib/**/*.js' 'setModuleId' lib | head -200
printf '%s\n' '--- all getModuleId calls ---'
rg -n --glob 'lib/**/*.js' 'getModuleId' lib | head -250
printf '%s\n' '--- startup rendering ---'
sed -n '1180,1285p' lib/javascript/JavascriptModulesPlugin.js
printf '%s\n' '--- module ID assignment hooks ---'
rg -n --glob 'lib/**/*.js' 'moduleIds|assign.*module|ModuleIds|beforeModuleIds|afterModuleIds' lib | head -250

#!/bin/bash
printf '%s\n' '--- module ID lifecycle ---'
sed -n '3640,3750p' lib/Compilation.js
sed -n '4325,4385p' lib/Compilation.js
sed -n '5835,5885p' lib/Compilation.js
printf '%s\n' '--- module needId definition and assignments ---'
rg -n --glob 'lib/**/*.js' 'needId' lib/Module.js lib/Compilation.js lib/ids | head -200
sed -n '280,335p' lib/Module.js
printf '%s\n' '--- ascending assignment guard ---'
sed -n '430,480p' lib/ids/IdHelpers.js
printf '%s\n' '--- default moduleIds configuration ---'
sed -n '2150,2205p' lib/config/defaults.js

#!/bin/bash
printf '%s\n' '--- entry-module rendering and ID use ---'
sed -n '1545,1615p' lib/javascript/JavascriptModulesPlugin.js
printf '%s\n' '--- seal/emit order after module IDs ---'
sed -n '3720,3845p' lib/Compilation.js
rg -n --glob 'lib/**/*.js' 'getChunkEntryModulesWithChunkGroupIterable|connectChunkAndEntryModule' lib/ChunkGraph.js lib/Compilation.js
printf '%s\n' '--- all assignments that disable IDs ---'
rg -n --glob 'lib/**/*.js' 'needId\\s*=\\s*false|setModuleId\\([^\\n]*""' lib

#!/bin/bash
printf '%s\n' '--- moduleIds option handling ---'
sed -n '690,765p' lib/WebpackOptionsApply.js
rg -n --glob 'schemas/**/*.json' --glob 'declarations/**/*.d.ts' '"moduleIds"|moduleIds' schemas declarations | head -100
printf '%s\n' '--- entry module graph methods ---'
sed -n '1160,1245p' lib/ChunkGraph.js
sed -n '1460,1515p' lib/ChunkGraph.js
printf '%s\n' '--- ID-disabled module cases ---'
rg -n --glob 'lib/**/*.js' 'needId = false|setModuleId\\([^)]*, ""\\)' lib || true

#!/bin/bash
printf '%s\n' '--- runtime require handling for null IDs ---'
sed -n '585,700p' lib/RuntimeTemplate.js
sed -n '730,770p' lib/RuntimeTemplate.js
sed -n '810,870p' lib/RuntimeTemplate.js
printf '%s\n' '--- tests/configurations using moduleIds: false ---'
rg -n --glob 'test/**/*.js' --glob 'test/**/*.json' 'moduleIds\\s*:\\s*false|moduleIds.*false' test | head -100
printf '%s\n' '--- option documentation for moduleIds false ---'
rg -n --glob 'types.d.ts' --glob 'schemas/WebpackOptions.json' --glob 'declarations/**/*.d.ts' 'moduleIds' | head -80

#!/bin/bash
python3 - <<'PY'
from pathlib import Path
import re

apply = Path("lib/WebpackOptionsApply.js").read_text()
abstract = Path("lib/library/AbstractLibraryPlugin.js").read_text()
chunk_graph = Path("lib/ChunkGraph.js").read_text()
defaults = Path("lib/config/defaults.js").read_text()

assert 'if (moduleIds) {' in apply
assert 'moduleIds: false' in Path("declarations/WebpackOptions.d.ts").read_text()
assert '`@returns` {ModuleId | null} the id of the module' in chunk_graph
assert 'JSON.stringify(' in abstract
assert 'getModuleId(module)' in abstract
assert '=== null' not in abstract[abstract.index('for (const module of entries'):abstract.index('return `${Template.asString(buf)}')]
print("moduleIds:false is supported, core plugin registration is conditional, getModuleId is nullable, and the merge loop has no null-ID guard.")
PY
node - <<'JS'
const moduleId = null;
const generated = `__webpack_require__(${JSON.stringify(moduleId)})`;
if (generated !== "__webpack_require__(null)") process.exit(1);
console.log(generated);
JS

#!/bin/bash
python3 - <<'PY'
from pathlib import Path

apply = Path("lib/WebpackOptionsApply.js").read_text()
abstract = Path("lib/library/AbstractLibraryPlugin.js").read_text()
chunk_graph = Path("lib/ChunkGraph.js").read_text()
declarations = Path("declarations/WebpackOptions.d.ts").read_text()

checks = {
    "moduleIds conditional": "if (moduleIds) {" in apply,
    "moduleIds false supported": 'moduleIds?: "natural" | "named" | "hashed" | "deterministic" | "size" | false;' in declarations,
    "nullable getModuleId": "`@returns` {ModuleId | null} the id of the module" in chunk_graph,
    "merge call uses getModuleId": "chunkGraph.getModuleId(module)" in abstract,
}
for name, passed in checks.items():
    print(f"{name}: {passed}")

start = abstract.index("for (const module of entries")
end = abstract.index("return `${Template.asString(buf)}\\n`;", start)
print("--- merge loop ---")
print(abstract[start:end])
PY