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|
import { TypeFlags, type Type } from 'ts-morph';
import { atLeastOneAndAllRequired, required } from '../utils/value-checks';
export type RawApiDocsType =
| RawApiDocsSimpleType
| RawApiDocsGenericType
| RawApiDocsUnionType
| RawApiDocsShadowType;
interface RawApiDocsBaseType {
type: string;
text: string;
}
export interface RawApiDocsSimpleType extends RawApiDocsBaseType {
type: 'simple';
}
export interface RawApiDocsGenericType extends RawApiDocsBaseType {
type: 'generic';
typeParameters: RawApiDocsType[];
}
export interface RawApiDocsUnionType extends RawApiDocsBaseType {
type: 'union';
types: RawApiDocsType[];
}
export interface RawApiDocsShadowType extends RawApiDocsBaseType {
type: 'shadow';
resolvedType: RawApiDocsType;
}
export function getNameSuffix(type: Type): string {
return type.isNullable() ? '?' : '';
}
export function getTypeText(
type: Type,
options: {
abbreviate?: boolean;
stripUndefined?: boolean;
resolveAliases?: boolean;
} = {}
): RawApiDocsType {
const {
abbreviate = false,
stripUndefined = false,
resolveAliases = false,
} = options;
if (
type.isAny() ||
type.isUnknown() ||
type.isBoolean() ||
type.isBooleanLiteral() ||
type.isNumber() ||
type.isNumberLiteral() ||
type.getFlags() & TypeFlags.BigInt ||
type.getFlags() & TypeFlags.ESSymbol ||
type.isString() ||
type.isUndefined() ||
type.isNull() ||
type.isVoid() ||
type.isNever()
) {
return newSimpleType(type.getText());
} else if (type.isStringLiteral()) {
return newSimpleType(type.getText().replace(/^"(.*)"$/, "'$1'"));
} else if (type.isArray()) {
return newArrayType(
getTypeText(type.getArrayElementTypeOrThrow(), options)
);
} else if (stripUndefined && type.isNullable()) {
return getTypeText(type.getNonNullableType(), options);
}
const symbol = type.getSymbol() ?? type.getAliasSymbol();
if (!resolveAliases && symbol) {
const name = symbol.getName();
if (name !== '__type') {
const typeArguments = [
...type.getTypeArguments(),
...type.getAliasTypeArguments(),
];
if (name === 'LiteralUnion') {
const displayType = getTypeText(typeArguments[0], options);
const baseType = typeArguments[1]
? getTypeText(typeArguments[1], options)
: newSimpleType('string');
return newUnionType([displayType, baseType]);
}
const typeParameters = typeArguments.map((t) => getTypeText(t, options));
if (typeParameters.length === 0) {
const resolvedType = getTypeText(type, {
...options,
resolveAliases: true,
});
if (name === resolvedType.text) {
return newSimpleType(name);
}
return newShadowType(name, resolvedType);
}
return newGenericType(name, typeParameters);
}
}
if (type.isUnion()) {
let unionTypes = type
.getUnionTypes()
.map((unionType) => getTypeText(unionType, options))
.filter((unionType) => !stripUndefined || unionType.text !== 'undefined');
const trueIndex = unionTypes.findIndex(
(unionType) => unionType.text === 'true'
);
if (
trueIndex !== -1 &&
unionTypes.some((unionType) => unionType.text === 'false')
) {
unionTypes[trueIndex] = newSimpleType('boolean');
unionTypes = unionTypes.filter(
(unionType) => unionType.text !== 'true' && unionType.text !== 'false'
);
}
if (unionTypes.length === 1) {
return unionTypes[0];
}
return newUnionType(unionTypes);
}
if (abbreviate && isOptionsLikeType(type)) {
return newSimpleType('{ ... }');
}
if (resolveAliases && type.isTypeParameter()) {
const text = getTypeText(type.getApparentType(), {
...options,
resolveAliases: true,
});
if (text.text === 'unknown') {
return newSimpleType('any');
}
return text;
}
return newSimpleType(type.getText().replaceAll(/import\([^)]*\)\./g, ''));
}
export function isOptionsLikeType(type: Type): boolean {
return (
type.isObject() &&
type.isAnonymous() &&
type.getCallSignatures().length === 0 &&
type.getTupleElements().length === 0
);
}
function newSimpleType(name: string): RawApiDocsSimpleType {
required(name, 'name');
return { type: 'simple', text: name };
}
function newArrayType(typeParameter: RawApiDocsType): RawApiDocsGenericType {
const { text } = required(typeParameter, 'array type');
const useGeneric = text.includes('|') || text.includes('{');
return {
type: 'generic',
typeParameters: [typeParameter],
text: useGeneric ? `Array<${text}>` : `${text}[]`,
};
}
function newGenericType(
name: string,
typeParameters: RawApiDocsType[]
): RawApiDocsType {
required(name, 'name');
atLeastOneAndAllRequired(typeParameters, 'type parameters');
return {
type: 'generic',
typeParameters,
text: `${name}<${typeParameters.map((t) => t.text).join(', ')}>`,
};
}
function newUnionType(types: RawApiDocsType[]): RawApiDocsUnionType {
atLeastOneAndAllRequired(types, 'unions');
return {
type: 'union',
types,
text: types
.map((type) => type.text)
.map((text) =>
// Remove LiteralUnion shadow types
text.endsWith(' & { zz_IGNORE_ME?: undefined; }')
? text.slice(0, -32)
: text
)
.map((text) => {
// () => T -> (() => T)
const isFunctionSignature = text.startsWith('(');
return isFunctionSignature ? `(${text})` : text;
})
.join(' | '),
};
}
function newShadowType(
displayText: string,
resolvedType: RawApiDocsType
): RawApiDocsShadowType {
required(displayText, 'display text');
required(resolvedType, 'resolved type');
return {
type: 'shadow',
resolvedType,
text: displayText,
};
}
|
