@@ -142,9 +142,13 @@ export const functions: FunctionBuildersMap = {
142 142
const sign = direction === 'desc' ? -1 : 1
143 143 144 144
function compare(itemA: unknown, itemB: unknown) {
145 -
const a = getter(itemA)
146 -
const b = getter(itemB)
147 -
return gt(a, b) ? sign : lt(a, b) ? -sign : 0
145 +
try {
146 +
const a = getter(itemA)
147 +
const b = getter(itemB)
148 +
return gt(a, b) ? sign : lt(a, b) ? -sign : 0
149 +
} catch {
150 +
return 0 // leave unsortable contents as-is
151 +
}
148 152
}
149 153 150 154
return (data: T[]) => data.slice().sort(compare)
@@ -258,21 +262,16 @@ export const functions: FunctionBuildersMap = {
258 262
data.length,
259 263 260 264
keys: () => Object.keys,
261 - 262 265
values: () => Object.values,
263 266 264 -
prod: () => (data: number[]) => data.reduce((a, b) => a * b),
265 - 266 -
sum: () => (data: number[]) => data.reduce((a, b) => a + b),
267 - 268 -
average: () => (data: number[]) => (functions.sum()(data) as number) / data.length,
267 +
prod: () => (data: number[]) => reduce(data, (a, b) => a * b),
268 +
sum: () => (data: number[]) => reduce(data, (a, b) => a + b, 0),
269 +
average: () => (data: number[]) => reduce(data, (a, b) => a + b) / data.length,
270 +
min: () => (data: number[]) => reduce(data, (a, b) => Math.min(a, b), null),
271 +
max: () => (data: number[]) => reduce(data, (a, b) => Math.max(a, b), null),
269 272 270 -
min: () => (data: number[]) => Math.min(...data),
271 - 272 -
max: () => (data: number[]) => Math.max(...data),
273 - 274 -
and: buildFunction((...args) => args.reduce((a, b) => !!(a && b))),
275 -
or: buildFunction((...args) => args.reduce((a, b) => !!(a || b))),
273 +
and: buildFunction((...args: unknown[]) => reduce(args, (a, b) => !!(a && b))),
274 +
or: buildFunction((...args: unknown[]) => reduce(args, (a, b) => !!(a || b))),
276 275
not: buildFunction((a: unknown) => !a),
277 276 278 277
exists: (queryGet: JSONQueryFunction) => {
@@ -343,3 +342,27 @@ export const functions: FunctionBuildersMap = {
343 342
}
344 343 345 344
const truthy = (x: unknown) => x !== null && x !== 0 && x !== false
345 + 346 +
const reduce = <T>(
347 +
data: T[],
348 +
callback: (previousValue: T, currentValue: T) => T,
349 +
initialValue?: T
350 +
): T => {
351 +
if (!isArray(data)) {
352 +
throwTypeError('Array expected')
353 +
}
354 + 355 +
if (initialValue !== undefined) {
356 +
return data.reduce(callback, initialValue)
357 +
}
358 + 359 +
if (data.length === 0) {
360 +
throwTypeError('Non-empty array expected')
361 +
}
362 + 363 +
return data.reduce(callback)
364 +
}
365 + 366 +
export const throwTypeError = (message: string) => {
367 +
throw new TypeError(message)
368 +
}
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