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add list formatting

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Duc Anh Phi 2023-08-22 18:21:15 +02:00
parent c2a14bc6c4
commit bd7947e490
1 changed files with 16 additions and 1 deletions
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17
source/index.ts
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@ -801,10 +801,25 @@ function unique<T>(values: T[]): T[] {
return Array.from(new Set(values)); return Array.from(new Set(values));
} }
function formatList(list: string[], disjunction = false) {
const conjunction = disjunction ? 'or' : 'and'
if (!list?.length) {
return '';
}
if (list.length === 1) {
return list.toString();
}
if (list.length === 2) {
return list.join(` ${conjunction} `);
}
return list.slice(0, -1).join(', ') + `, ${conjunction} ` + list.slice(-1);
};
function typeErrorMessageMultipleValues(expectedType: AssertionTypeDescription | AssertionTypeDescription[], values: unknown[]): string { function typeErrorMessageMultipleValues(expectedType: AssertionTypeDescription | AssertionTypeDescription[], values: unknown[]): string {
const uniqueExpectedTypes = unique((isArray(expectedType) ? expectedType : [expectedType]).map(value => `\`${value}\``)); const uniqueExpectedTypes = unique((isArray(expectedType) ? expectedType : [expectedType]).map(value => `\`${value}\``));
const uniqueValueTypes = unique(values.map(value => `\`${is(value)}\``)); const uniqueValueTypes = unique(values.map(value => `\`${is(value)}\``));
return `Expected values which are ${uniqueExpectedTypes.join(', ')}. Received values of type${uniqueValueTypes.length > 1 ? 's' : ''} ${uniqueValueTypes.join(', ')}.`; return `Expected values which are ${formatList(uniqueExpectedTypes, true)}. Received values of type${uniqueValueTypes.length > 1 ? 's' : ''} ${formatList(uniqueValueTypes)}.`;
} }
// Type assertions have to be declared with an explicit type. // Type assertions have to be declared with an explicit type.