cloudflare/cloudflare-typescript
Publicmirrored fromhttps://github.com/cloudflare/cloudflare-typescriptAvailable
src/internal/qs/stringify.ts
388lines · modecode
| 1 | import { encode, is_buffer, maybe_map } from './utils'; |
| 2 | import { default_format, formatters } from './formats'; |
| 3 | import type { NonNullableProperties, StringifyOptions } from './types'; |
| 4 | |
| 5 | const has = Object.prototype.hasOwnProperty; |
| 6 | |
| 7 | const array_prefix_generators = { |
| 8 | brackets(prefix: PropertyKey) { |
| 9 | return String(prefix) + '[]'; |
| 10 | }, |
| 11 | comma: 'comma', |
| 12 | indices(prefix: PropertyKey, key: string) { |
| 13 | return String(prefix) + '[' + key + ']'; |
| 14 | }, |
| 15 | repeat(prefix: PropertyKey) { |
| 16 | return String(prefix); |
| 17 | }, |
| 18 | }; |
| 19 | |
| 20 | const is_array = Array.isArray; |
| 21 | const push = Array.prototype.push; |
| 22 | const push_to_array = function (arr: any[], value_or_array: any) { |
| 23 | push.apply(arr, is_array(value_or_array) ? value_or_array : [value_or_array]); |
| 24 | }; |
| 25 | |
| 26 | const to_ISO = Date.prototype.toISOString; |
| 27 | |
| 28 | const defaults = { |
| 29 | addQueryPrefix: false, |
| 30 | allowDots: false, |
| 31 | allowEmptyArrays: false, |
| 32 | arrayFormat: 'indices', |
| 33 | charset: 'utf-8', |
| 34 | charsetSentinel: false, |
| 35 | delimiter: '&', |
| 36 | encode: true, |
| 37 | encodeDotInKeys: false, |
| 38 | encoder: encode, |
| 39 | encodeValuesOnly: false, |
| 40 | format: default_format, |
| 41 | formatter: formatters[default_format], |
| 42 | /** @deprecated */ |
| 43 | indices: false, |
| 44 | serializeDate(date) { |
| 45 | return to_ISO.call(date); |
| 46 | }, |
| 47 | skipNulls: false, |
| 48 | strictNullHandling: false, |
| 49 | } as NonNullableProperties<StringifyOptions & { formatter: (typeof formatters)['RFC1738'] }>; |
| 50 | |
| 51 | function is_non_nullish_primitive(v: unknown): v is string | number | boolean | symbol | bigint { |
| 52 | return ( |
| 53 | typeof v === 'string' || |
| 54 | typeof v === 'number' || |
| 55 | typeof v === 'boolean' || |
| 56 | typeof v === 'symbol' || |
| 57 | typeof v === 'bigint' |
| 58 | ); |
| 59 | } |
| 60 | |
| 61 | const sentinel = {}; |
| 62 | |
| 63 | function inner_stringify( |
| 64 | object: any, |
| 65 | prefix: PropertyKey, |
| 66 | generateArrayPrefix: StringifyOptions['arrayFormat'] | ((prefix: string, key: string) => string), |
| 67 | commaRoundTrip: boolean, |
| 68 | allowEmptyArrays: boolean, |
| 69 | strictNullHandling: boolean, |
| 70 | skipNulls: boolean, |
| 71 | encodeDotInKeys: boolean, |
| 72 | encoder: StringifyOptions['encoder'], |
| 73 | filter: StringifyOptions['filter'], |
| 74 | sort: StringifyOptions['sort'], |
| 75 | allowDots: StringifyOptions['allowDots'], |
| 76 | serializeDate: StringifyOptions['serializeDate'], |
| 77 | format: StringifyOptions['format'], |
| 78 | formatter: StringifyOptions['formatter'], |
| 79 | encodeValuesOnly: boolean, |
| 80 | charset: StringifyOptions['charset'], |
| 81 | sideChannel: WeakMap<any, any>, |
| 82 | ) { |
| 83 | let obj = object; |
| 84 | |
| 85 | let tmp_sc = sideChannel; |
| 86 | let step = 0; |
| 87 | let find_flag = false; |
| 88 | while ((tmp_sc = tmp_sc.get(sentinel)) !== void undefined && !find_flag) { |
| 89 | // Where object last appeared in the ref tree |
| 90 | const pos = tmp_sc.get(object); |
| 91 | step += 1; |
| 92 | if (typeof pos !== 'undefined') { |
| 93 | if (pos === step) { |
| 94 | throw new RangeError('Cyclic object value'); |
| 95 | } else { |
| 96 | find_flag = true; // Break while |
| 97 | } |
| 98 | } |
| 99 | if (typeof tmp_sc.get(sentinel) === 'undefined') { |
| 100 | step = 0; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | if (typeof filter === 'function') { |
| 105 | obj = filter(prefix, obj); |
| 106 | } else if (obj instanceof Date) { |
| 107 | obj = serializeDate?.(obj); |
| 108 | } else if (generateArrayPrefix === 'comma' && is_array(obj)) { |
| 109 | obj = maybe_map(obj, function (value) { |
| 110 | if (value instanceof Date) { |
| 111 | return serializeDate?.(value); |
| 112 | } |
| 113 | return value; |
| 114 | }); |
| 115 | } |
| 116 | |
| 117 | if (obj === null) { |
| 118 | if (strictNullHandling) { |
| 119 | return encoder && !encodeValuesOnly ? |
| 120 | // @ts-expect-error |
| 121 | encoder(prefix, defaults.encoder, charset, 'key', format) |
| 122 | : prefix; |
| 123 | } |
| 124 | |
| 125 | obj = ''; |
| 126 | } |
| 127 | |
| 128 | if (is_non_nullish_primitive(obj) || is_buffer(obj)) { |
| 129 | if (encoder) { |
| 130 | const key_value = |
| 131 | encodeValuesOnly ? prefix |
| 132 | // @ts-expect-error |
| 133 | : encoder(prefix, defaults.encoder, charset, 'key', format); |
| 134 | return [ |
| 135 | formatter?.(key_value) + |
| 136 | '=' + |
| 137 | // @ts-expect-error |
| 138 | formatter?.(encoder(obj, defaults.encoder, charset, 'value', format)), |
| 139 | ]; |
| 140 | } |
| 141 | return [formatter?.(prefix) + '=' + formatter?.(String(obj))]; |
| 142 | } |
| 143 | |
| 144 | const values: string[] = []; |
| 145 | |
| 146 | if (typeof obj === 'undefined') { |
| 147 | return values; |
| 148 | } |
| 149 | |
| 150 | let obj_keys; |
| 151 | if (generateArrayPrefix === 'comma' && is_array(obj)) { |
| 152 | // we need to join elements in |
| 153 | if (encodeValuesOnly && encoder) { |
| 154 | // @ts-expect-error values only |
| 155 | obj = maybe_map(obj, encoder); |
| 156 | } |
| 157 | obj_keys = [{ value: obj.length > 0 ? obj.join(',') || null : void undefined }]; |
| 158 | } else if (is_array(filter)) { |
| 159 | obj_keys = filter; |
| 160 | } else { |
| 161 | const keys = Object.keys(obj); |
| 162 | obj_keys = sort ? keys.sort(sort) : keys; |
| 163 | } |
| 164 | |
| 165 | const encoded_prefix = encodeDotInKeys ? String(prefix).replace(/\./g, '%2E') : String(prefix); |
| 166 | |
| 167 | const adjusted_prefix = |
| 168 | commaRoundTrip && is_array(obj) && obj.length === 1 ? encoded_prefix + '[]' : encoded_prefix; |
| 169 | |
| 170 | if (allowEmptyArrays && is_array(obj) && obj.length === 0) { |
| 171 | return adjusted_prefix + '[]'; |
| 172 | } |
| 173 | |
| 174 | for (let j = 0; j < obj_keys.length; ++j) { |
| 175 | const key = obj_keys[j]; |
| 176 | const value = |
| 177 | // @ts-ignore |
| 178 | typeof key === 'object' && typeof key.value !== 'undefined' ? key.value : obj[key as any]; |
| 179 | |
| 180 | if (skipNulls && value === null) { |
| 181 | continue; |
| 182 | } |
| 183 | |
| 184 | // @ts-ignore |
| 185 | const encoded_key = allowDots && encodeDotInKeys ? (key as any).replace(/\./g, '%2E') : key; |
| 186 | const key_prefix = |
| 187 | is_array(obj) ? |
| 188 | typeof generateArrayPrefix === 'function' ? |
| 189 | generateArrayPrefix(adjusted_prefix, encoded_key) |
| 190 | : adjusted_prefix |
| 191 | : adjusted_prefix + (allowDots ? '.' + encoded_key : '[' + encoded_key + ']'); |
| 192 | |
| 193 | sideChannel.set(object, step); |
| 194 | const valueSideChannel = new WeakMap(); |
| 195 | valueSideChannel.set(sentinel, sideChannel); |
| 196 | push_to_array( |
| 197 | values, |
| 198 | inner_stringify( |
| 199 | value, |
| 200 | key_prefix, |
| 201 | generateArrayPrefix, |
| 202 | commaRoundTrip, |
| 203 | allowEmptyArrays, |
| 204 | strictNullHandling, |
| 205 | skipNulls, |
| 206 | encodeDotInKeys, |
| 207 | // @ts-ignore |
| 208 | generateArrayPrefix === 'comma' && encodeValuesOnly && is_array(obj) ? null : encoder, |
| 209 | filter, |
| 210 | sort, |
| 211 | allowDots, |
| 212 | serializeDate, |
| 213 | format, |
| 214 | formatter, |
| 215 | encodeValuesOnly, |
| 216 | charset, |
| 217 | valueSideChannel, |
| 218 | ), |
| 219 | ); |
| 220 | } |
| 221 | |
| 222 | return values; |
| 223 | } |
| 224 | |
| 225 | function normalize_stringify_options( |
| 226 | opts: StringifyOptions = defaults, |
| 227 | ): NonNullableProperties<Omit<StringifyOptions, 'indices'>> & { indices?: boolean } { |
| 228 | if (typeof opts.allowEmptyArrays !== 'undefined' && typeof opts.allowEmptyArrays !== 'boolean') { |
| 229 | throw new TypeError('`allowEmptyArrays` option can only be `true` or `false`, when provided'); |
| 230 | } |
| 231 | |
| 232 | if (typeof opts.encodeDotInKeys !== 'undefined' && typeof opts.encodeDotInKeys !== 'boolean') { |
| 233 | throw new TypeError('`encodeDotInKeys` option can only be `true` or `false`, when provided'); |
| 234 | } |
| 235 | |
| 236 | if (opts.encoder !== null && typeof opts.encoder !== 'undefined' && typeof opts.encoder !== 'function') { |
| 237 | throw new TypeError('Encoder has to be a function.'); |
| 238 | } |
| 239 | |
| 240 | const charset = opts.charset || defaults.charset; |
| 241 | if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') { |
| 242 | throw new TypeError('The charset option must be either utf-8, iso-8859-1, or undefined'); |
| 243 | } |
| 244 | |
| 245 | let format = default_format; |
| 246 | if (typeof opts.format !== 'undefined') { |
| 247 | if (!has.call(formatters, opts.format)) { |
| 248 | throw new TypeError('Unknown format option provided.'); |
| 249 | } |
| 250 | format = opts.format; |
| 251 | } |
| 252 | const formatter = formatters[format]; |
| 253 | |
| 254 | let filter = defaults.filter; |
| 255 | if (typeof opts.filter === 'function' || is_array(opts.filter)) { |
| 256 | filter = opts.filter; |
| 257 | } |
| 258 | |
| 259 | let arrayFormat: StringifyOptions['arrayFormat']; |
| 260 | if (opts.arrayFormat && opts.arrayFormat in array_prefix_generators) { |
| 261 | arrayFormat = opts.arrayFormat; |
| 262 | } else if ('indices' in opts) { |
| 263 | arrayFormat = opts.indices ? 'indices' : 'repeat'; |
| 264 | } else { |
| 265 | arrayFormat = defaults.arrayFormat; |
| 266 | } |
| 267 | |
| 268 | if ('commaRoundTrip' in opts && typeof opts.commaRoundTrip !== 'boolean') { |
| 269 | throw new TypeError('`commaRoundTrip` must be a boolean, or absent'); |
| 270 | } |
| 271 | |
| 272 | const allowDots = |
| 273 | typeof opts.allowDots === 'undefined' ? |
| 274 | !!opts.encodeDotInKeys === true ? |
| 275 | true |
| 276 | : defaults.allowDots |
| 277 | : !!opts.allowDots; |
| 278 | |
| 279 | return { |
| 280 | addQueryPrefix: typeof opts.addQueryPrefix === 'boolean' ? opts.addQueryPrefix : defaults.addQueryPrefix, |
| 281 | // @ts-ignore |
| 282 | allowDots: allowDots, |
| 283 | allowEmptyArrays: |
| 284 | typeof opts.allowEmptyArrays === 'boolean' ? !!opts.allowEmptyArrays : defaults.allowEmptyArrays, |
| 285 | arrayFormat: arrayFormat, |
| 286 | charset: charset, |
| 287 | charsetSentinel: |
| 288 | typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel, |
| 289 | commaRoundTrip: !!opts.commaRoundTrip, |
| 290 | delimiter: typeof opts.delimiter === 'undefined' ? defaults.delimiter : opts.delimiter, |
| 291 | encode: typeof opts.encode === 'boolean' ? opts.encode : defaults.encode, |
| 292 | encodeDotInKeys: |
| 293 | typeof opts.encodeDotInKeys === 'boolean' ? opts.encodeDotInKeys : defaults.encodeDotInKeys, |
| 294 | encoder: typeof opts.encoder === 'function' ? opts.encoder : defaults.encoder, |
| 295 | encodeValuesOnly: |
| 296 | typeof opts.encodeValuesOnly === 'boolean' ? opts.encodeValuesOnly : defaults.encodeValuesOnly, |
| 297 | filter: filter, |
| 298 | format: format, |
| 299 | formatter: formatter, |
| 300 | serializeDate: typeof opts.serializeDate === 'function' ? opts.serializeDate : defaults.serializeDate, |
| 301 | skipNulls: typeof opts.skipNulls === 'boolean' ? opts.skipNulls : defaults.skipNulls, |
| 302 | // @ts-ignore |
| 303 | sort: typeof opts.sort === 'function' ? opts.sort : null, |
| 304 | strictNullHandling: |
| 305 | typeof opts.strictNullHandling === 'boolean' ? opts.strictNullHandling : defaults.strictNullHandling, |
| 306 | }; |
| 307 | } |
| 308 | |
| 309 | export function stringify(object: any, opts: StringifyOptions = {}) { |
| 310 | let obj = object; |
| 311 | const options = normalize_stringify_options(opts); |
| 312 | |
| 313 | let obj_keys: PropertyKey[] | undefined; |
| 314 | let filter; |
| 315 | |
| 316 | if (typeof options.filter === 'function') { |
| 317 | filter = options.filter; |
| 318 | obj = filter('', obj); |
| 319 | } else if (is_array(options.filter)) { |
| 320 | filter = options.filter; |
| 321 | obj_keys = filter; |
| 322 | } |
| 323 | |
| 324 | const keys: string[] = []; |
| 325 | |
| 326 | if (typeof obj !== 'object' || obj === null) { |
| 327 | return ''; |
| 328 | } |
| 329 | |
| 330 | const generateArrayPrefix = array_prefix_generators[options.arrayFormat]; |
| 331 | const commaRoundTrip = generateArrayPrefix === 'comma' && options.commaRoundTrip; |
| 332 | |
| 333 | if (!obj_keys) { |
| 334 | obj_keys = Object.keys(obj); |
| 335 | } |
| 336 | |
| 337 | if (options.sort) { |
| 338 | obj_keys.sort(options.sort); |
| 339 | } |
| 340 | |
| 341 | const sideChannel = new WeakMap(); |
| 342 | for (let i = 0; i < obj_keys.length; ++i) { |
| 343 | const key = obj_keys[i]!; |
| 344 | |
| 345 | if (options.skipNulls && obj[key] === null) { |
| 346 | continue; |
| 347 | } |
| 348 | push_to_array( |
| 349 | keys, |
| 350 | inner_stringify( |
| 351 | obj[key], |
| 352 | key, |
| 353 | // @ts-expect-error |
| 354 | generateArrayPrefix, |
| 355 | commaRoundTrip, |
| 356 | options.allowEmptyArrays, |
| 357 | options.strictNullHandling, |
| 358 | options.skipNulls, |
| 359 | options.encodeDotInKeys, |
| 360 | options.encode ? options.encoder : null, |
| 361 | options.filter, |
| 362 | options.sort, |
| 363 | options.allowDots, |
| 364 | options.serializeDate, |
| 365 | options.format, |
| 366 | options.formatter, |
| 367 | options.encodeValuesOnly, |
| 368 | options.charset, |
| 369 | sideChannel, |
| 370 | ), |
| 371 | ); |
| 372 | } |
| 373 | |
| 374 | const joined = keys.join(options.delimiter); |
| 375 | let prefix = options.addQueryPrefix === true ? '?' : ''; |
| 376 | |
| 377 | if (options.charsetSentinel) { |
| 378 | if (options.charset === 'iso-8859-1') { |
| 379 | // encodeURIComponent('✓'), the "numeric entity" representation of a checkmark |
| 380 | prefix += 'utf8=%26%2310003%3B&'; |
| 381 | } else { |
| 382 | // encodeURIComponent('✓') |
| 383 | prefix += 'utf8=%E2%9C%93&'; |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | return joined.length > 0 ? prefix + joined : ''; |
| 388 | } |
| 389 | |