/
optional-chaining.ts
1282 lines (1279 loc) · 36.8 KB
/
optional-chaining.ts
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import { Context } from '../../../src/common';
import { pass, fail } from '../../test-utils';
import * as t from 'assert';
import { parseSource } from '../../../src/parser';
describe('Optional chaining', () => {
for (const arg of [
'func?.()',
'obj?.prop',
'obj?.def\\u{61}ult',
'func?.(...args)',
'a?.[x]',
'a?.()',
'x?.1:y',
'a?.[++x]',
'a?.b.c(++x).d',
'a?.b[3].c?.(x).d',
'(a?.b).c',
'delete a?.b',
'func?.(a, b)',
'a?.func?.()',
'a?.func?.(a, b)',
'null?.valueOf()',
'a.func?.()',
'obj?.[expr]',
'obj?.[expr]?.[other]',
`obj?.[true]`,
'obj?.[true]?.[true]',
'obj.a?.[expr]',
`obj.a?.[true]`,
`foo.bar?.baz`,
`foo?.bar?.baz`,
`foo?.bar`,
'a.b?.c()',
'(a?.b).c;',
'(a?.b).c();',
'(a?.b)?.c.d?.e;',
`a?.b.c.d.e?.f`,
`a.b.c?.d.e.f`,
`if (a?.b?.c) {
console.log(a?.b?.c);
} else if (a?.b.c?.d?.e.f) {
console.log(a?.b.c?.d?.e.f);
}`,
'true?.valueOf()',
'0?.valueOf()',
'false?.()',
'0?.()',
'({})?.()',
'[]?.()',
`class A {
a () {}
}
class B extends A {
dot () {
return super.a?.name;
}
expr () {
return super['a'].name;
}
undf () {
return super.b?.c;
}
}`,
'({})?.a["b"]',
'delete null?.foo',
'({})?.constructor',
'({ x: "hi" })?.x',
'[]?.length',
'true?.["valueOf"]()',
'null?.["valueOf"]()',
'undefined?.["valueOf"]()',
'const a = b.map(p => p.d?.e?.f);',
'const a = b.map(p => p.c?.d?.e ?? "(string)");',
'f?.(arg0, arg1)',
'true?.(123)',
'true?.(123??x?.3:5)',
'true?.(123)',
`function isInvoked(obj) {
let invoked = false;
obj?.a.b.m(invoked = true);
return invoked;
}`,
'a.b?.c?.d',
'obj ? ["a", "b", "c"].map(x => x+x) : []',
'const a = b?.c?.[d]?.e;',
'const a = b?.c();',
'const { a, b } = c.d?.e;',
'1?.["valueOf"]()',
'() => 0?.()',
'() => 1?.()',
'() => "hi"?.()',
'() => ({})?.a["b"]',
'() => (() => {})?.()()',
'(() => {})?.()?.()',
'null?.()().a["b"]',
'delete undefined?.()',
'delete null?.()',
'x?.([...[function f() {}.prop]] = [])',
'x?.({ a: obj.a } = {})',
'value = { x: 4 };',
'for (let [a = b?.a] of [0, c = 0]);',
'({x: y = z = 0} = 1)?.(a??b)',
'({x: y = z = 0} = 1)?.(a?.(a??b))',
'({let} = 0);',
'([x.y = a] = ([x.y = a?.y] = ([x.y = a] = z)))',
'({..."x".x} = x?.y);',
'({...{}.x} = x??y?.(a=b?.a));',
'([...[([...[].x] = x??y?.z)].x] = x);',
'([...{}.x] = x);',
'({..."x"[x]} = x);',
'({...[][x?.y]} = x);',
'({...[][x?.y]} = x = y);',
'({...[][x?.y]} = x = (y?.y??z));',
'({...{}[x?.y]} = x?.y??z);',
'undefined?.(...a)',
'[a, b] = [b, a];',
'[a, b.c] = [d?.e, f?.g];',
'[a, b.c] = [d?.e, (f.g) = h];',
'[a, b] = f?.(); ',
'var [a, , b] = f();',
'[a, ...b] = [1, 2?.a, 3];',
'null?.(1, ...a)',
'({}).a?.(...a)',
'({ a: null }).a?.(...a)',
'undefined?.(...a)?.(1, ...a)',
'() => 5?.(...[])',
'delete o1?.x',
'o2.x',
'greet.call?.({ suffix: "!" }, "world")',
'null.call?.({ suffix: "!" }, "world")',
'({}).call?.({ suffix: "!" }, "world")',
'greet?.apply({ suffix: "?" }, "world")',
'masquerader?.()',
'greet.call?.({ suffix: "!" }, "world")',
'greet.call?.({ suffix: "!" }, "world")',
'o2.x?.["y"];',
'a?.[foo(a)]',
'a ?? a.b ?? (a?.b).c();',
'a ?? foo.bar?.baz ?? a.c',
'a ?? aobj?.[expr]?.[other] ?? foo.bar?.baz',
'a?.b[3].c?.(x).d ?? aobj?.[expr]?.[other] ?? foo.bar?.baz',
'const x = a?.b.c',
'(null)?.b === null',
'let a = b?.c',
'a?.b',
'!a ? a : a.b',
'foo(null?.x)',
'let a = b?? "default";',
'let a = b.c ?? "default";',
'let xn = x?.normalize("NFC")',
'a?.b === undefined',
'null?.foo === null',
'var v = a?.b?.c?.d',
'var v = (((a?.b)?.c)?.d)',
'a?.b?.c?.d === undefined',
'o3?.a === o4?.a === undefined',
'o3?.a?.b === o4?.a?.b === undefined',
'o3?.a?.b?.c === o4?.a?.b?.c === undefined',
'x in (o3?.a)',
'obj.func?.[arg].property;',
'obj.func?.[arg.property];',
'a?.b.c.e?.f.g?.h.t.c?.d()?.e;',
'a?.d().f?.b',
'(fn()?.a)?.b',
'a?.[++x]',
'a?.b.c(++x).d;',
'undefined?.[++x]',
'undefined?.b.c(++x).d; ',
'undefined?.b',
'obj.func?.[arg];',
'a?.trim()?.indexOf("hello")',
'foo?.x?.y?.z?()=>{foo}:bar;',
`if (a?.b?.c === 'foobar') {}
if (a?.b()?.c) {}
if (a?.b?.()?.c) {}`,
'yield?.(yield())',
'yield?.(yield())',
'async?.(package())',
'async?.(async())',
'async?.(async?.a, async?.a)',
'async?.(async?.a, async?.(x))',
'async?.(async?.(), async?.[x])',
'async?.(async?.a, async?.a)',
'async?.("string", async?.a, async?.a)',
'async?.(123, async?.a, async?.a)',
'async?.(async?.a, "string", a=>x?.z)',
'async?.("string", async=>x?.z, x=>async?.z)',
'async?.(async=>x?.z, "string", async(yield)=>x?.z)',
'async?.(async=>x?.z, "string", async(x)=>x?.z)',
'async?.(async(x)=>x?.z, "string", async(x)=>x?.z)',
'async?.(async()=>x?.await)',
'new async(async()=>x?.await)',
'new yield(async()=>x?.await)',
'new new class {}().constructor();',
'System.global.navigator?.toString()',
'(a?.b).async?.[await??async]',
'"hello"?.a',
'null?.a',
'[1, 2]?.[1]',
'(function a () {}?.name)',
'(class Foo {}?.name)',
'(function * a () {}?.name)',
'(async function a () {}?.name)',
'(async function * a () {}?.name)',
'/[a-z]/?.test("a")',
'`hello`?.[0]',
'({a: 33}, null)?.a',
'({a: 33})?.a',
'(undefined, {a: 33})?.a',
'arr?.[i + 1]',
'arr[0]?.a',
'arr[1]?.a',
'false?.4:5',
'delete o2?.x',
'greet.call?.({ suffix: "!" }, "world")',
'({ undefined: 3 })?.[null?.a]',
'(() => 3)?.(null?.a)',
'({})?.["i"]?.()',
'() => ({})?.["i"]()',
'0?.()',
'1?.()',
'[]?.()',
'({})?.["constructor"]',
'[]?.length',
'1?.valueOf()',
'0?.valueOf()',
'o1.x?.["y"];',
'o1.x?.();',
'null?.(o1.x);',
'obj?.c(10)',
'obj?.d();',
'(a?.b).c',
`a?.b(...args);`,
'(obj?.a)?.b',
'(fn()?.a)?.b',
`a?.b(...args).c;`,
'const value = true ?.30 : false;',
'undf?.b',
'[x.y = 1] = [42]',
'({ x: 1 }).x?.y.z;',
`a?.b(...args).c(...args);`,
'let a = b?.c;',
'o.x?[y]+z:t',
'({ x: y?.z })',
'var a = b.c("string")?.d.e || 0;'
]) {
it(`${arg}`, () => {
t.doesNotThrow(() => {
parseSource(`${arg}`, undefined, Context.OptionsLexical);
});
});
it(`${arg}`, () => {
t.doesNotThrow(() => {
parseSource(`${arg}`, undefined, Context.OptionsWebCompat);
});
});
it(`${arg}`, () => {
t.doesNotThrow(() => {
parseSource(`${arg}`, undefined, Context.OptionsNext | Context.OptionsLexical);
});
});
it(`${arg}`, () => {
t.doesNotThrow(() => {
parseSource(`${arg}`, undefined, Context.OptionsNext | Context.OptionsWebCompat);
});
});
}
fail('Expressions - Optional chaining (fail)', [
['a = { x = flag?.[] = true } = value;', Context.None],
['a?.fn`hello`;', Context.None],
['({x: [y]?.a = 0} = 1)', Context.None],
['async(x?.x)=>x?.z', Context.None],
['[a, x?.z] = f(() => { [a, b.c] = [d.e, (f.g) = h]; }); ', Context.None],
['([a, b] = f?.x(() => { [a, b?.c] = [d.e, (f.g) = h]; }));', Context.None],
['[a, ...b?.a] = [1, 2, ...c];', Context.None],
['({..."x"?.x} = x);', Context.None],
['([x.y = a] = ([x.y = a?.y] = ([x.y?.y = a] = z)))', Context.None],
['([...[]?.x] = x);', Context.None],
['({...[][x?.y]} = (x?.i) = (y));', Context.None],
['({0: y?.a} = 0)', Context.None],
['({0: x?.a, 1: x} = 0)', Context.None],
['({a:let?.foo} = 0);', Context.None],
['x?.[y] = foo', Context.None],
['0, [{ set y(val) {}}?.y] = [23];', Context.None],
['0, { x: y?.z = 42 } = { x: 23 };', Context.None],
['0, { x: y?.z = 42 } = { x: 23 };', Context.OptionsWebCompat],
['0, { x: y?.z } = { x: 23 };', Context.None],
['0, { x: { set y(val) { }}?.y = 42} = {x: 42};', Context.None],
['0, { x: { set y(val) {}}?.y} = {x: 42};', Context.None],
['for ([x?.y = 42] in [[23]]) ;', Context.OptionsWebCompat],
['for ([x?.y = 42] in [[23]]) ;', Context.None],
['for ([x?.y] in [[23]]) ;', Context.None],
['for ([x?.y] in [[23]]) ;', Context.OptionsWebCompat],
['for ([{ set y(val) {}}?.y = 42] in [[23]]) ;', Context.None],
['for ([{ set y(val) {}}?.y] in [[23]]) ;', Context.None],
['for ({ x: y?.z = 42 } in [{ x: 23 }]) ;', Context.None],
['for ({ x: y?.z } in [{ x: 23 }]) ;', Context.None],
['for ({ x: { set y(val) { }}?.y = 42} in [{x: 42}]) ;', Context.None],
['for ({ x: { set y(val) {} }?.y} in [{x: 42}]) ;', Context.None],
['for ([x?.y = 42] of [[23]]) ;', Context.None],
['for ([x?.y] of [[23]]) ;', Context.None],
['for ([{ set y(val) {}}?.y = 42] of [[23]]) ;', Context.None],
['for ([{ set y(val) { }}?.y] of [[23]]) ;', Context.None],
['for ({ x: y?.z = 42 } of [{ x: 23 }]) ;', Context.None],
['for ({ x: y?.z } of [{ x: 23 }]) ;', Context.None],
['for ({ x: {set y(val) { }}?.y = 42} of [{x: 42}]) ;', Context.None],
['for ({ x: { set y(val) {}}?.y} of [{x: 42}]) ;', Context.None],
['0, [x?.y] = [23];', Context.None],
['0, [x?.y = 42] = [23];', Context.None],
['0, { x: { set y(val) {}}?.y} = {x: 42};', Context.None],
['0, [{ set y(val) {}}?.y] = [23];', Context.None],
['async?.(async?.(), async?.[])', Context.None],
['yield?.await = foo', Context.None],
['async?.await = foo', Context.None],
['async?.[x] = foo', Context.None],
['async?.() = foo', Context.None],
['a.?2.3', Context.None],
['a.?.2', Context.None],
['a.?2.n', Context.None],
['a.?2.3', Context.None],
['class C {} class D extends C { foo() { return super?.["bar"]; } }', Context.None],
['const o = { C: class {} }; new o?.C();', Context.None],
['const o = { C: class {} }; new o?.["C"]();', Context.None],
['class C {} new C?.();', Context.None],
['function foo() { new?.target; }', Context.None],
['function tag() {} tag?.``;', Context.None],
['const o = { tag() {} }; o?.tag``;', Context.None],
['a.?2.?n', Context.None],
['obj?.a = 33;', Context.None],
['a.? (?) [?]', Context.None],
['a.?2.3', Context.None],
['{a: 44}?.a', Context.None],
['let obj = {x:x?.1}; [...obj["x"]] = [10];', Context.None],
['let [...[...[...x?.a]]] = [x?.[[]]];', Context.None],
['let [...[...[...x?.a]]] = [[[]]];', Context.None],
['let [...[...[...x]]] = [?.a[[]]];', Context.None],
['try {} catch ([e?.a, ...a]) {}', Context.None],
['try {} catch (a?.[e]) {}', Context.None],
['[...[{x?.prop: 1}.prop]] = []', Context.None],
['[...[{prop?.a: 1}.prop]] = []', Context.None],
['[...[{prop: 1}.prop]] = x?.[]', Context.None],
['obj?.[expr] func?.(...args) new C?.(...args)', Context.None],
['o.x?[y]+z', Context.None],
['obj:?.prop', Context.None],
['obj:?[expr]', Context.None],
['func:?(...args)', Context.None],
['a === null: a?.b.c === undefined', Context.None],
['a === null: a?.b.c === undefined', Context.None],
['?.a?.b?.c', Context.None],
['?.(a.b.c)', Context.None],
['?. ?[] ?() ?:', Context.None],
['var b = condition ? a?.x.?y : a?.y?.z;', Context.None],
['a.?[b.c].d', Context.None],
['a[?b[c]]', Context.None],
['delete ?a.b.c', Context.None],
['delete ?a.b.c', Context.None],
['[x?.y = 1]', Context.None],
['[x?.x?.y = 1]', Context.None],
['[x?.?.y = 1]', Context.None],
['[x?.y = 1]', Context.None],
['a?.b => (a == null ? a : a.b)', Context.None],
['foo?.x?.y?.z?()=>foo;', Context.None],
['const a = { b(){ return super?.c; } }', Context.None],
['class A{ b(){ return super?.b; } }', Context.OptionsWebCompat],
['new a?.();', Context.Module | Context.Strict],
['new C?.b.d()', Context.OptionsWebCompat],
['a.?b.?()', Context.OptionsWebCompat],
['a.?()', Context.OptionsWebCompat],
['a?.b = c', Context.OptionsWebCompat],
['a?.{a} = c', Context.OptionsWebCompat],
['a?.(a) = c', Context.OptionsWebCompat],
['o3?.a in ()', Context.OptionsWebCompat],
['a?.b => (a == null ? void 0 : a.b) a?.b.c => (a == null ? void 0 : a.b.c)', Context.OptionsWebCompat],
// FIXME: current implementation does not invalidate destructuring.
// ["({ a: x?.obj['a'] } = {})", Context.OptionsWebCompat],
// ['[...[x?.this[0], ...x?.this[1]]] = []', Context.OptionsWebCompat],
['class C {} class D extends C { foo() { return super?.bar; } }', Context.OptionsWebCompat],
['class C {} class D extends C { foo() { return super?.["bar"]; }', Context.OptionsWebCompat],
['class C {} class D extends C { constructor() { super?.(); } }', Context.OptionsWebCompat],
['const o = { C: class {} }; new o?.C();', Context.OptionsWebCompat],
['const o = { C: class {} }; new o?.["C"]();', Context.OptionsWebCompat],
['class C {} new C?.();', Context.OptionsWebCompat],
['function tag() {} tag?.``', Context.OptionsWebCompat],
['const o = { tag() {} }; o?.tag``', Context.OptionsWebCompat],
['import?.("foo")', Context.OptionsWebCompat],
['new new class {}()?.constructor?.();', Context.OptionsWebCompat],
['a?.{a} = c', Context.None],
['a.?()', Context.None]
]);
pass('Optional chaining (pass)', [
[
`a?.b`,
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'a',
start: 0,
end: 1,
range: [0, 1]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'b',
start: 3,
end: 4,
range: [3, 4]
},
start: 0,
end: 4,
range: [0, 4]
},
start: 0,
end: 4,
range: [0, 4]
},
start: 0,
end: 4,
range: [0, 4]
}
],
start: 0,
end: 4,
range: [0, 4]
}
],
[
'obj.aaa.bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'MemberExpression',
object: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 0,
end: 3,
range: [0, 3]
},
computed: false,
property: {
type: 'Identifier',
name: 'aaa',
start: 4,
end: 7,
range: [4, 7]
},
start: 0,
end: 7,
range: [0, 7]
},
computed: false,
property: {
type: 'Identifier',
name: 'bbb',
start: 8,
end: 11,
range: [8, 11]
},
start: 0,
end: 11,
range: [0, 11]
},
start: 0,
end: 11,
range: [0, 11]
}
],
start: 0,
end: 11,
range: [0, 11]
}
],
[
'obj.aaa?.bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 0,
end: 3,
range: [0, 3]
},
computed: false,
property: {
type: 'Identifier',
name: 'aaa',
start: 4,
end: 7,
range: [4, 7]
},
start: 0,
end: 7,
range: [0, 7]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'bbb',
start: 9,
end: 12,
range: [9, 12]
},
start: 0,
end: 12,
range: [0, 12]
},
start: 0,
end: 12,
range: [0, 12]
},
start: 0,
end: 12,
range: [0, 12]
}
],
start: 0,
end: 12,
range: [0, 12]
}
],
[
'obj?.aaa.bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 0,
end: 3,
range: [0, 3]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'aaa',
start: 5,
end: 8,
range: [5, 8]
},
start: 0,
end: 8,
range: [0, 8]
},
computed: false,
property: {
type: 'Identifier',
name: 'bbb',
start: 9,
end: 12,
range: [9, 12]
},
start: 0,
end: 12,
range: [0, 12]
},
start: 0,
end: 12,
range: [0, 12]
},
start: 0,
end: 12,
range: [0, 12]
}
],
start: 0,
end: 12,
range: [0, 12]
}
],
[
'obj?.aaa?.bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 0,
end: 3,
range: [0, 3]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'aaa',
start: 5,
end: 8,
range: [5, 8]
},
start: 0,
end: 8,
range: [0, 8]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'bbb',
start: 10,
end: 13,
range: [10, 13]
},
start: 0,
end: 13,
range: [0, 13]
},
start: 0,
end: 13,
range: [0, 13]
},
start: 0,
end: 13,
range: [0, 13]
}
],
start: 0,
end: 13,
range: [0, 13]
}
],
[
'(obj.aaa).bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'MemberExpression',
object: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 1,
end: 4,
range: [1, 4]
},
computed: false,
property: {
type: 'Identifier',
name: 'aaa',
start: 5,
end: 8,
range: [5, 8]
},
start: 1,
end: 8,
range: [1, 8]
},
computed: false,
property: {
type: 'Identifier',
name: 'bbb',
start: 10,
end: 13,
range: [10, 13]
},
start: 0,
end: 13,
range: [0, 13]
},
start: 0,
end: 13,
range: [0, 13]
}
],
start: 0,
end: 13,
range: [0, 13]
}
],
[
'(obj.aaa)?.bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 1,
end: 4,
range: [1, 4]
},
computed: false,
property: {
type: 'Identifier',
name: 'aaa',
start: 5,
end: 8,
range: [5, 8]
},
start: 1,
end: 8,
range: [1, 8]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'bbb',
start: 11,
end: 14,
range: [11, 14]
},
start: 0,
end: 14,
range: [0, 14]
},
start: 0,
end: 14,
range: [0, 14]
},
start: 0,
end: 14,
range: [0, 14]
}
],
start: 0,
end: 14,
range: [0, 14]
}
],
[
'(obj?.aaa).bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'MemberExpression',
object: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 1,
end: 4,
range: [1, 4]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'aaa',
start: 6,
end: 9,
range: [6, 9]
},
start: 1,
end: 9,
range: [1, 9]
},
start: 1,
end: 9,
range: [1, 9]
},
computed: false,
property: {
type: 'Identifier',
name: 'bbb',
start: 11,
end: 14,
range: [11, 14]
},
start: 0,
end: 14,
range: [0, 14]
},
start: 0,
end: 14,
range: [0, 14]
}
],
start: 0,
end: 14,
range: [0, 14]
}
],
[
'(obj?.aaa)?.bbb',
Context.OptionsRanges | Context.OptionsWebCompat,
{
type: 'Program',
sourceType: 'script',
body: [
{
type: 'ExpressionStatement',
expression: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'ChainExpression',
expression: {
type: 'MemberExpression',
object: {
type: 'Identifier',
name: 'obj',
start: 1,
end: 4,
range: [1, 4]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'aaa',
start: 6,
end: 9,
range: [6, 9]
},
start: 1,
end: 9,
range: [1, 9]
},
start: 1,
end: 9,
range: [1, 9]
},
computed: false,
optional: true,
property: {
type: 'Identifier',
name: 'bbb',
start: 12,
end: 15,
range: [12, 15]
},
start: 0,
end: 15,
range: [0, 15]
},
start: 0,
end: 15,
range: [0, 15]
},
start: 0,
end: 15,
range: [0, 15]
}
],
start: 0,
end: 15,
range: [0, 15]
}
],
[
'a?.[x]',
Context.OptionsRanges | Context.OptionsWebCompat,
{
body: [
{
end: 6,
expression: {
end: 6,
expression: {
computed: true,
end: 6,
object: {
end: 1,
name: 'a',
range: [0, 1],
start: 0,
type: 'Identifier'
},
optional: true,
property: {
end: 5,
name: 'x',
range: [4, 5],
start: 4,
type: 'Identifier'
},
range: [0, 6],
start: 0,
type: 'MemberExpression'
},
range: [0, 6],
start: 0,
type: 'ChainExpression'
},
range: [0, 6],
start: 0,
type: 'ExpressionStatement'
}
],
end: 6,
range: [0, 6],
sourceType: 'script',
start: 0,
type: 'Program'
}
],
[
'a?.import("string")?.import.meta??(a)',
Context.OptionsRanges | Context.OptionsWebCompat,
{
body: [
{
end: 37,
expression: {
end: 37,
left: {
end: 32,
expression: {
computed: false,
end: 32,
object: {
computed: false,
end: 27,
object: {
arguments: [
{
end: 18,
range: [10, 18],
start: 10,
type: 'Literal',
value: 'string'
}
],
callee: {
computed: false,
end: 9,
object: {