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JamesHenryJamesHenry
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Breaking: Only add .implements/.accessibility/.decorators if truthy (#354)
1 parent 275897b commit ab4e05e

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5 files changed

+81
-453
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‎lib/convert.js

Lines changed: 77 additions & 30 deletions
Original file line numberDiff line numberDiff line change
@@ -229,6 +229,26 @@ module.exports = function convert(config) {
229229
});
230230
}
231231

232+
/**
233+
* Converts an array of TSNode parameters into an array of ESTreeNode params
234+
* @param {TSNode[]} parameters An array of TSNode params to be converted
235+
* @returns {ESTreeNode[]} an array of converted ESTreeNode params
236+
*/
237+
function convertParameters(parameters) {
238+
if (!parameters || !parameters.length) {
239+
return [];
240+
}
241+
return parameters.map(param => {
242+
const convertedParam = convertChild(param);
243+
if (!param.decorators || !param.decorators.length) {
244+
return convertedParam;
245+
}
246+
return Object.assign(convertedParam, {
247+
decorators: convertDecorators(param.decorators)
248+
});
249+
});
250+
}
251+
232252
/**
233253
* For nodes that are copied directly from the TypeScript AST into
234254
* ESTree mostly as-is. The only difference is the addition of a type
@@ -470,7 +490,7 @@ module.exports = function convert(config) {
470490

471491
case SyntaxKind.ForInStatement:
472492
case SyntaxKind.ForOfStatement: {
473-
const isAwait = node.awaitModifier && node.awaitModifier.kind === SyntaxKind.AwaitKeyword;
493+
const isAwait = !!(node.awaitModifier && node.awaitModifier.kind === SyntaxKind.AwaitKeyword);
474494
Object.assign(result, {
475495
type: SyntaxKind[node.kind],
476496
left: convertChild(node.initializer),
@@ -507,7 +527,7 @@ module.exports = function convert(config) {
507527
generator: !!node.asteriskToken,
508528
expression: false,
509529
async: nodeUtils.hasModifier(SyntaxKind.AsyncKeyword, node),
510-
params: node.parameters.map(convertChild),
530+
params: convertParameters(node.parameters),
511531
body: convertChild(node.body)
512532
});
513533

@@ -724,12 +744,19 @@ module.exports = function convert(config) {
724744
value: convertChild(node.initializer),
725745
computed: nodeUtils.isComputedProperty(node.name),
726746
static: nodeUtils.hasStaticModifierFlag(node),
727-
accessibility: nodeUtils.getTSNodeAccessibility(node),
728747
readonly: nodeUtils.hasModifier(SyntaxKind.ReadonlyKeyword, node),
729-
decorators: convertDecorators(node.decorators),
730748
typeAnnotation: (node.type) ? convertTypeAnnotation(node.type) : null
731749
});
732750

751+
if (node.decorators) {
752+
result.decorators = convertDecorators(node.decorators);
753+
}
754+
755+
const accessibility = nodeUtils.getTSNodeAccessibility(node);
756+
if (accessibility) {
757+
result.accessibility = accessibility;
758+
}
759+
733760
if (node.name.kind === SyntaxKind.Identifier && node.questionToken) {
734761
result.key.optional = true;
735762
}
@@ -788,11 +815,7 @@ module.exports = function convert(config) {
788815
/**
789816
* Unlike in object literal methods, class method params can have decorators
790817
*/
791-
method.params = node.parameters.map(param => {
792-
const convertedParam = convertChild(param);
793-
convertedParam.decorators = convertDecorators(param.decorators);
794-
return convertedParam;
795-
});
818+
method.params = convertParameters(node.parameters);
796819

797820
/**
798821
* TypeScript class methods can be defined as "abstract"
@@ -807,11 +830,18 @@ module.exports = function convert(config) {
807830
value: method,
808831
computed: nodeUtils.isComputedProperty(node.name),
809832
static: nodeUtils.hasStaticModifierFlag(node),
810-
kind: "method",
811-
accessibility: nodeUtils.getTSNodeAccessibility(node),
812-
decorators: convertDecorators(node.decorators)
833+
kind: "method"
813834
});
814835

836+
if (node.decorators) {
837+
result.decorators = convertDecorators(node.decorators);
838+
}
839+
840+
const accessibility = nodeUtils.getTSNodeAccessibility(node);
841+
if (accessibility) {
842+
result.accessibility = accessibility;
843+
}
844+
815845
}
816846

817847
if (result.key.type === AST_NODE_TYPES.Identifier && node.questionToken) {
@@ -845,13 +875,7 @@ module.exports = function convert(config) {
845875
constructor = {
846876
type: AST_NODE_TYPES.FunctionExpression,
847877
id: null,
848-
params: node.parameters.map(param => {
849-
const convertedParam = convertChild(param);
850-
const decorators = convertDecorators(param.decorators);
851-
return Object.assign(convertedParam, {
852-
decorators
853-
});
854-
}),
878+
params: convertParameters(node.parameters),
855879
generator: false,
856880
expression: false,
857881
async: false,
@@ -912,10 +936,15 @@ module.exports = function convert(config) {
912936
key: constructorKey,
913937
value: constructor,
914938
computed: constructorIsComputed,
915-
accessibility: nodeUtils.getTSNodeAccessibility(node),
916939
static: constructorIsStatic,
917940
kind: (constructorIsStatic || constructorIsComputed) ? "method" : "constructor"
918941
});
942+
943+
const accessibility = nodeUtils.getTSNodeAccessibility(node);
944+
if (accessibility) {
945+
result.accessibility = accessibility;
946+
}
947+
919948
break;
920949

921950
}
@@ -925,7 +954,7 @@ module.exports = function convert(config) {
925954
type: AST_NODE_TYPES.FunctionExpression,
926955
id: convertChild(node.name),
927956
generator: !!node.asteriskToken,
928-
params: node.parameters.map(convertChild),
957+
params: convertParameters(node.parameters),
929958
body: convertChild(node.body),
930959
async: nodeUtils.hasModifier(SyntaxKind.AsyncKeyword, node),
931960
expression: false
@@ -1024,7 +1053,7 @@ module.exports = function convert(config) {
10241053
type: AST_NODE_TYPES.ArrowFunctionExpression,
10251054
generator: false,
10261055
id: null,
1027-
params: node.parameters.map(convertChild),
1056+
params: convertParameters(node.parameters),
10281057
body: convertChild(node.body),
10291058
async: nodeUtils.hasModifier(SyntaxKind.AsyncKeyword, node),
10301059
expression: node.body.kind !== SyntaxKind.Block
@@ -1273,11 +1302,17 @@ module.exports = function convert(config) {
12731302
range: [openBrace.getStart(), result.range[1]],
12741303
loc: nodeUtils.getLocFor(openBrace.getStart(), node.end, ast)
12751304
},
1276-
superClass: (superClass ? convertChild(superClass.types[0].expression) : null),
1277-
implements: hasImplements ? heritageClauses[0].types.map(convertClassImplements) : [],
1278-
decorators: convertDecorators(node.decorators)
1305+
superClass: (superClass ? convertChild(superClass.types[0].expression) : null)
12791306
});
12801307

1308+
if (hasImplements) {
1309+
result.implements = heritageClauses[0].types.map(convertClassImplements);
1310+
}
1311+
1312+
if (node.decorators) {
1313+
result.decorators = convertDecorators(node.decorators);
1314+
}
1315+
12811316
const filteredMembers = node.members.filter(nodeUtils.isESTreeClassMember);
12821317

12831318
if (filteredMembers.length) {
@@ -1845,14 +1880,18 @@ module.exports = function convert(config) {
18451880
optional: nodeUtils.isOptional(node),
18461881
computed: nodeUtils.isComputedProperty(node.name),
18471882
key: convertChild(node.name),
1848-
params: node.parameters.map(parameter => convertChild(parameter)),
1883+
params: convertParameters(node.parameters),
18491884
typeAnnotation: (node.type) ? convertTypeAnnotation(node.type) : null,
1850-
accessibility: nodeUtils.getTSNodeAccessibility(node),
18511885
readonly: nodeUtils.hasModifier(SyntaxKind.ReadonlyKeyword, node),
18521886
static: nodeUtils.hasModifier(SyntaxKind.StaticKeyword, node),
18531887
export: nodeUtils.hasModifier(SyntaxKind.ExportKeyword, node)
18541888
});
18551889

1890+
const accessibility = nodeUtils.getTSNodeAccessibility(node);
1891+
if (accessibility) {
1892+
result.accessibility = accessibility;
1893+
}
1894+
18561895
if (node.typeParameters) {
18571896
result.typeParameters = convertTSTypeParametersToTypeParametersDeclaration(node.typeParameters);
18581897
}
@@ -1868,12 +1907,16 @@ module.exports = function convert(config) {
18681907
key: convertChild(node.name),
18691908
typeAnnotation: (node.type) ? convertTypeAnnotation(node.type) : null,
18701909
initializer: convertChild(node.initializer),
1871-
accessibility: nodeUtils.getTSNodeAccessibility(node),
18721910
readonly: nodeUtils.hasModifier(SyntaxKind.ReadonlyKeyword, node),
18731911
static: nodeUtils.hasModifier(SyntaxKind.StaticKeyword, node),
18741912
export: nodeUtils.hasModifier(SyntaxKind.ExportKeyword, node)
18751913
});
18761914

1915+
const accessibility = nodeUtils.getTSNodeAccessibility(node);
1916+
if (accessibility) {
1917+
result.accessibility = accessibility;
1918+
}
1919+
18771920
break;
18781921
}
18791922

@@ -1882,19 +1925,23 @@ module.exports = function convert(config) {
18821925
type: AST_NODE_TYPES.TSIndexSignature,
18831926
index: convertChild(node.parameters[0]),
18841927
typeAnnotation: (node.type) ? convertTypeAnnotation(node.type) : null,
1885-
accessibility: nodeUtils.getTSNodeAccessibility(node),
18861928
readonly: nodeUtils.hasModifier(SyntaxKind.ReadonlyKeyword, node),
18871929
static: nodeUtils.hasModifier(SyntaxKind.StaticKeyword, node),
18881930
export: nodeUtils.hasModifier(SyntaxKind.ExportKeyword, node)
18891931
});
18901932

1933+
const accessibility = nodeUtils.getTSNodeAccessibility(node);
1934+
if (accessibility) {
1935+
result.accessibility = accessibility;
1936+
}
1937+
18911938
break;
18921939
}
18931940

18941941
case SyntaxKind.ConstructSignature: {
18951942
Object.assign(result, {
18961943
type: AST_NODE_TYPES.TSConstructSignature,
1897-
params: node.parameters.map(parameter => convertChild(parameter)),
1944+
params: convertParameters(node.parameters),
18981945
typeAnnotation: (node.type) ? convertTypeAnnotation(node.type) : null
18991946
});
19001947

‎tests/lib/__snapshots__/basics.js.snap

Lines changed: 0 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1084,7 +1084,6 @@ Object {
10841084
],
10851085
"type": "ClassBody",
10861086
},
1087-
"decorators": Array [],
10881087
"id": Object {
10891088
"loc": Object {
10901089
"end": Object {
@@ -1103,7 +1102,6 @@ Object {
11031102
],
11041103
"type": "Identifier",
11051104
},
1106-
"implements": Array [],
11071105
"loc": Object {
11081106
"end": Object {
11091107
"column": 1,

‎tests/lib/__snapshots__/comments.js.snap

Lines changed: 0 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -458,9 +458,7 @@ Object {
458458
"body": Object {
459459
"body": Array [
460460
Object {
461-
"accessibility": null,
462461
"computed": false,
463-
"decorators": Array [],
464462
"key": Object {
465463
"loc": Object {
466464
"end": Object {
@@ -554,9 +552,7 @@ Object {
554552
],
555553
"type": "ClassBody",
556554
},
557-
"decorators": Array [],
558555
"id": null,
559-
"implements": Array [],
560556
"loc": Object {
561557
"end": Object {
562558
"column": 1,

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