diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index 739da04398e..4c6c0885182 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -51,6 +51,7 @@ namespace ts {
["es2019.symbol", "lib.es2019.symbol.d.ts"],
["es2020.bigint", "lib.es2020.bigint.d.ts"],
["es2020.promise", "lib.es2020.promise.d.ts"],
+ ["es2020.sharedmemory", "lib.es2020.sharedmemory.d.ts"],
["es2020.string", "lib.es2020.string.d.ts"],
["es2020.symbol.wellknown", "lib.es2020.symbol.wellknown.d.ts"],
["es2020.intl", "lib.es2020.intl.d.ts"],
diff --git a/src/lib/es2020.d.ts b/src/lib/es2020.d.ts
index 86b473e6d49..f420cd61b1d 100644
--- a/src/lib/es2020.d.ts
+++ b/src/lib/es2020.d.ts
@@ -1,6 +1,7 @@
///
///
///
+///
///
///
///
diff --git a/src/lib/es2020.sharedmemory.d.ts b/src/lib/es2020.sharedmemory.d.ts
new file mode 100644
index 00000000000..e8403c18ba8
--- /dev/null
+++ b/src/lib/es2020.sharedmemory.d.ts
@@ -0,0 +1,79 @@
+interface Atomics {
+ /**
+ * Adds a value to the value at the given position in the array, returning the original value.
+ * Until this atomic operation completes, any other read or write operation against the array
+ * will block.
+ */
+ add(typedArray: BigInt64Array | BigUint64Array, index: number, value: bigint): bigint;
+
+ /**
+ * Stores the bitwise AND of a value with the value at the given position in the array,
+ * returning the original value. Until this atomic operation completes, any other read or
+ * write operation against the array will block.
+ */
+ and(typedArray: BigInt64Array | BigUint64Array, index: number, value: bigint): bigint;
+
+ /**
+ * Replaces the value at the given position in the array if the original value equals the given
+ * expected value, returning the original value. Until this atomic operation completes, any
+ * other read or write operation against the array will block.
+ */
+ compareExchange(typedArray: BigInt64Array | BigUint64Array, index: number, expectedValue: bigint, replacementValue: bigint): bigint;
+
+ /**
+ * Replaces the value at the given position in the array, returning the original value. Until
+ * this atomic operation completes, any other read or write operation against the array will
+ * block.
+ */
+ exchange(typedArray: BigInt64Array | BigUint64Array, index: number, value: bigint): bigint;
+
+ /**
+ * Returns the value at the given position in the array. Until this atomic operation completes,
+ * any other read or write operation against the array will block.
+ */
+ load(typedArray: BigInt64Array | BigUint64Array, index: number): bigint;
+
+ /**
+ * Stores the bitwise OR of a value with the value at the given position in the array,
+ * returning the original value. Until this atomic operation completes, any other read or write
+ * operation against the array will block.
+ */
+ or(typedArray: BigInt64Array | BigUint64Array, index: number, value: bigint): bigint;
+
+ /**
+ * Stores a value at the given position in the array, returning the new value. Until this
+ * atomic operation completes, any other read or write operation against the array will block.
+ */
+ store(typedArray: BigInt64Array | BigUint64Array, index: number, value: bigint): bigint;
+
+ /**
+ * Subtracts a value from the value at the given position in the array, returning the original
+ * value. Until this atomic operation completes, any other read or write operation against the
+ * array will block.
+ */
+ sub(typedArray: BigInt64Array | BigUint64Array, index: number, value: bigint): bigint;
+
+ /**
+ * If the value at the given position in the array is equal to the provided value, the current
+ * agent is put to sleep causing execution to suspend until the timeout expires (returning
+ * `"timed-out"`) or until the agent is awoken (returning `"ok"`); otherwise, returns
+ * `"not-equal"`.
+ */
+ wait(typedArray: BigInt64Array, index: number, value: bigint, timeout?: number): "ok" | "not-equal" | "timed-out";
+
+ /**
+ * Wakes up sleeping agents that are waiting on the given index of the array, returning the
+ * number of agents that were awoken.
+ * @param typedArray A shared BigInt64Array.
+ * @param index The position in the typedArray to wake up on.
+ * @param count The number of sleeping agents to notify. Defaults to +Infinity.
+ */
+ notify(typedArray: BigInt64Array, index: number, count?: number): number;
+
+ /**
+ * Stores the bitwise XOR of a value with the value at the given position in the array,
+ * returning the original value. Until this atomic operation completes, any other read or write
+ * operation against the array will block.
+ */
+ xor(typedArray: BigInt64Array | BigUint64Array, index: number, value: bigint): bigint;
+}
diff --git a/src/lib/libs.json b/src/lib/libs.json
index 8c3f93b9b17..5f96ec11454 100644
--- a/src/lib/libs.json
+++ b/src/lib/libs.json
@@ -42,6 +42,7 @@
"es2019.symbol",
"es2020.bigint",
"es2020.promise",
+ "es2020.sharedmemory",
"es2020.string",
"es2020.symbol.wellknown",
"es2020.intl",
diff --git a/src/testRunner/unittests/config/commandLineParsing.ts b/src/testRunner/unittests/config/commandLineParsing.ts
index 4c1331ca430..70db9bc6754 100644
--- a/src/testRunner/unittests/config/commandLineParsing.ts
+++ b/src/testRunner/unittests/config/commandLineParsing.ts
@@ -83,7 +83,7 @@ namespace ts {
assertParseResult(["--lib", "es5,invalidOption", "0.ts"],
{
errors: [{
- messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2020.bigint', 'es2020.promise', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
+ messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2020.bigint', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
category: Diagnostics.Argument_for_0_option_must_be_Colon_1.category,
code: Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
file: undefined,
@@ -285,7 +285,7 @@ namespace ts {
assertParseResult(["--lib", "es5,", "es7", "0.ts"],
{
errors: [{
- messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2020.bigint', 'es2020.promise', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
+ messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2020.bigint', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
category: Diagnostics.Argument_for_0_option_must_be_Colon_1.category,
code: Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
file: undefined,
@@ -304,7 +304,7 @@ namespace ts {
assertParseResult(["--lib", "es5, ", "es7", "0.ts"],
{
errors: [{
- messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2020.bigint', 'es2020.promise', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
+ messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2020.bigint', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
category: Diagnostics.Argument_for_0_option_must_be_Colon_1.category,
code: Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
file: undefined,
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/initial-build/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js b/tests/baselines/reference/tsc/runWithoutArgs/initial-build/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
index 5c89f9c9dbe..fa5338d5884 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/initial-build/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/initial-build/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
@@ -26,7 +26,7 @@ Options:
-t VERSION, --target VERSION Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'.
-m KIND, --module KIND Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'.
--lib Specify library files to be included in the compilation.
- 'es5' 'es6' 'es2015' 'es7' 'es2016' 'es2017' 'es2018' 'es2019' 'es2020' 'esnext' 'dom' 'dom.iterable' 'webworker' 'webworker.importscripts' 'scripthost' 'es2015.core' 'es2015.collection' 'es2015.generator' 'es2015.iterable' 'es2015.promise' 'es2015.proxy' 'es2015.reflect' 'es2015.symbol' 'es2015.symbol.wellknown' 'es2016.array.include' 'es2017.object' 'es2017.sharedmemory' 'es2017.string' 'es2017.intl' 'es2017.typedarrays' 'es2018.asyncgenerator' 'es2018.asynciterable' 'es2018.intl' 'es2018.promise' 'es2018.regexp' 'es2019.array' 'es2019.object' 'es2019.string' 'es2019.symbol' 'es2020.bigint' 'es2020.promise' 'es2020.string' 'es2020.symbol.wellknown' 'es2020.intl' 'esnext.array' 'esnext.symbol' 'esnext.asynciterable' 'esnext.intl' 'esnext.bigint' 'esnext.string' 'esnext.promise'
+ 'es5' 'es6' 'es2015' 'es7' 'es2016' 'es2017' 'es2018' 'es2019' 'es2020' 'esnext' 'dom' 'dom.iterable' 'webworker' 'webworker.importscripts' 'scripthost' 'es2015.core' 'es2015.collection' 'es2015.generator' 'es2015.iterable' 'es2015.promise' 'es2015.proxy' 'es2015.reflect' 'es2015.symbol' 'es2015.symbol.wellknown' 'es2016.array.include' 'es2017.object' 'es2017.sharedmemory' 'es2017.string' 'es2017.intl' 'es2017.typedarrays' 'es2018.asyncgenerator' 'es2018.asynciterable' 'es2018.intl' 'es2018.promise' 'es2018.regexp' 'es2019.array' 'es2019.object' 'es2019.string' 'es2019.symbol' 'es2020.bigint' 'es2020.promise' 'es2020.sharedmemory' 'es2020.string' 'es2020.symbol.wellknown' 'es2020.intl' 'esnext.array' 'esnext.symbol' 'esnext.asynciterable' 'esnext.intl' 'esnext.bigint' 'esnext.string' 'esnext.promise'
--allowJs Allow javascript files to be compiled.
--jsx KIND Specify JSX code generation: 'preserve', 'react-native', or 'react'.
-d, --declaration Generates corresponding '.d.ts' file.