node.d.ts 12.2 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478
import Declaration, { DeclarationProps } from './declaration.js'
import Comment, { CommentProps } from './comment.js'
import { Stringifier, Syntax } from './postcss.js'
import AtRule, { AtRuleProps } from './at-rule.js'
import Rule, { RuleProps } from './rule.js'
import Warning, { WarningOptions } from './warning.js'
import CssSyntaxError from './css-syntax-error.js'
import Result from './result.js'
import Input from './input.js'
import Root from './root.js'
import Document from './document.js'
import Container from './container.js'

export type ChildNode = AtRule | Rule | Declaration | Comment

export type AnyNode = AtRule | Rule | Declaration | Comment | Root | Document

export type ChildProps =
  | AtRuleProps
  | RuleProps
  | DeclarationProps
  | CommentProps

export interface Position {
  /**
   * Source offset in file. It starts from 0.
   */
  offset: number

  /**
   * Source line in file. In contrast to `offset` it starts from 1.
   */
  column: number

  /**
   * Source column in file.
   */
  line: number
}

export interface Range {
  /**
   * Start position, inclusive.
   */
  start: Position

  /**
   * End position, exclusive.
   */
  end: Position
}

export interface Source {
  /**
   * The file source of the node.
   */
  input: Input
  /**
   * The inclusive starting position of the node’s source.
   */
  start?: Position
  /**
   * The inclusive ending position of the node's source.
   */
  end?: Position
}

export interface NodeProps {
  source?: Source
}

interface NodeErrorOptions {
  /**
   * Plugin name that created this error. PostCSS will set it automatically.
   */
  plugin?: string
  /**
   * A word inside a node's string, that should be highlighted as source
   * of error.
   */
  word?: string
  /**
   * An index inside a node's string that should be highlighted as source
   * of error.
   */
  index?: number
  /**
   * An ending index inside a node's string that should be highlighted as
   * source of error.
   */
  endIndex?: number
}

/**
 * All node classes inherit the following common methods.
 *
 * You should not extend this classes to create AST for selector or value
 * parser.
 */
export default abstract class Node {
  /**
   * tring representing the node’s type. Possible values are `root`, `atrule`,
   * `rule`, `decl`, or `comment`.
   *
   * ```js
   * new Declaration({ prop: 'color', value: 'black' }).type //=> 'decl'
   * ```
   */
  type: string

  /**
   * The node’s parent node.
   *
   * ```js
   * root.nodes[0].parent === root
   * ```
   */
  parent: Document | Container | undefined

  /**
   * The input source of the node.
   *
   * The property is used in source map generation.
   *
   * If you create a node manually (e.g., with `postcss.decl()`),
   * that node will not have a `source` property and will be absent
   * from the source map. For this reason, the plugin developer should
   * consider cloning nodes to create new ones (in which case the new node’s
   * source will reference the original, cloned node) or setting
   * the `source` property manually.
   *
   * ```js
   * decl.source.input.from //=> '/home/ai/a.sass'
   * decl.source.start      //=> { line: 10, column: 2 }
   * decl.source.end        //=> { line: 10, column: 12 }
   * ```
   *
   * ```js
   * // Bad
   * const prefixed = postcss.decl({
   *   prop: '-moz-' + decl.prop,
   *   value: decl.value
   * })
   *
   * // Good
   * const prefixed = decl.clone({ prop: '-moz-' + decl.prop })
   * ```
   *
   * ```js
   * if (atrule.name === 'add-link') {
   *   const rule = postcss.rule({ selector: 'a', source: atrule.source })
   *   atrule.parent.insertBefore(atrule, rule)
   * }
   * ```
   */
  source?: Source

  /**
   * Information to generate byte-to-byte equal node string as it was
   * in the origin input.
   *
   * Every parser saves its own properties,
   * but the default CSS parser uses:
   *
   * * `before`: the space symbols before the node. It also stores `*`
   *   and `_` symbols before the declaration (IE hack).
   * * `after`: the space symbols after the last child of the node
   *   to the end of the node.
   * * `between`: the symbols between the property and value
   *   for declarations, selector and `{` for rules, or last parameter
   *   and `{` for at-rules.
   * * `semicolon`: contains true if the last child has
   *   an (optional) semicolon.
   * * `afterName`: the space between the at-rule name and its parameters.
   * * `left`: the space symbols between `/*` and the comment’s text.
   * * `right`: the space symbols between the comment’s text
   *   and <code>*&#47;</code>.
   * * `important`: the content of the important statement,
   *   if it is not just `!important`.
   *
   * PostCSS cleans selectors, declaration values and at-rule parameters
   * from comments and extra spaces, but it stores origin content in raws
   * properties. As such, if you don’t change a declaration’s value,
   * PostCSS will use the raw value with comments.
   *
   * ```js
   * const root = postcss.parse('a {\n  color:black\n}')
   * root.first.first.raws //=> { before: '\n  ', between: ':' }
   * ```
   */
  raws: any

  /**
   * @param defaults Value for node properties.
   */
  constructor(defaults?: object)

  /**
   * Returns a `CssSyntaxError` instance containing the original position
   * of the node in the source, showing line and column numbers and also
   * a small excerpt to facilitate debugging.
   *
   * If present, an input source map will be used to get the original position
   * of the source, even from a previous compilation step
   * (e.g., from Sass compilation).
   *
   * This method produces very useful error messages.
   *
   * ```js
   * if (!variables[name]) {
   *   throw decl.error(`Unknown variable ${name}`, { word: name })
   *   // CssSyntaxError: postcss-vars:a.sass:4:3: Unknown variable $black
   *   //   color: $black
   *   // a
   *   //          ^
   *   //   background: white
   * }
   * ```
   *
   * @param message Error description.
   * @param opts    Options.
   *
   * @return Error object to throw it.
   */
  error(message: string, options?: NodeErrorOptions): CssSyntaxError

  /**
   * This method is provided as a convenience wrapper for `Result#warn`.
   *
   * ```js
   *   Declaration: {
   *     bad: (decl, { result }) => {
   *       decl.warn(result, 'Deprecated property bad')
   *     }
   *   }
   * ```
   *
   * @param result The `Result` instance that will receive the warning.
   * @param text   Warning message.
   * @param opts   Warning Options.
   *
   * @return Created warning object.
   */
  warn(result: Result, text: string, opts?: WarningOptions): Warning

  /**
   * Removes the node from its parent and cleans the parent properties
   * from the node and its children.
   *
   * ```js
   * if (decl.prop.match(/^-webkit-/)) {
   *   decl.remove()
   * }
   * ```
   *
   * @return Node to make calls chain.
   */
  remove(): this

  /**
   * Returns a CSS string representing the node.
   *
   * ```js
   * new Rule({ selector: 'a' }).toString() //=> "a {}"
   * ```
   *
   * @param stringifier A syntax to use in string generation.
   * @return CSS string of this node.
   */
  toString(stringifier?: Stringifier | Syntax): string

  /**
   * Assigns properties to the current node.
   *
   * ```js
   * decl.assign({ prop: 'word-wrap', value: 'break-word' })
   * ```
   *
   * @param overrides New properties to override the node.
   * @return Current node to methods chain.
   */
  assign(overrides: object): this

  /**
   * Returns an exact clone of the node.
   *
   * The resulting cloned node and its (cloned) children will retain
   * code style properties.
   *
   * ```js
   * decl.raws.before    //=> "\n  "
   * const cloned = decl.clone({ prop: '-moz-' + decl.prop })
   * cloned.raws.before  //=> "\n  "
   * cloned.toString()   //=> -moz-transform: scale(0)
   * ```
   *
   * @param overrides New properties to override in the clone.
   * @return Clone of the node.
   */
  clone(overrides?: object): this

  /**
   * Shortcut to clone the node and insert the resulting cloned node
   * before the current node.
   *
   * ```js
   * decl.cloneBefore({ prop: '-moz-' + decl.prop })
   * ```
   *
   * @param overrides Mew properties to override in the clone.
   *
   * @return New node
   */
  cloneBefore(overrides?: object): this

  /**
   * Shortcut to clone the node and insert the resulting cloned node
   * after the current node.
   *
   * @param overrides New properties to override in the clone.
   * @return New node.
   */
  cloneAfter(overrides?: object): this

  /**
   * Inserts node(s) before the current node and removes the current node.
   *
   * ```js
   * AtRule: {
   *   mixin: atrule => {
   *     atrule.replaceWith(mixinRules[atrule.params])
   *   }
   * }
   * ```
   *
   * @param nodes Mode(s) to replace current one.
   * @return Current node to methods chain.
   */
  replaceWith(
    ...nodes: (ChildNode | ChildProps | ChildNode[] | ChildProps[])[]
  ): this

  /**
   * Returns the next child of the node’s parent.
   * Returns `undefined` if the current node is the last child.
   *
   * ```js
   * if (comment.text === 'delete next') {
   *   const next = comment.next()
   *   if (next) {
   *     next.remove()
   *   }
   * }
   * ```
   *
   * @return Next node.
   */
  next(): ChildNode | undefined

  /**
   * Returns the previous child of the node’s parent.
   * Returns `undefined` if the current node is the first child.
   *
   * ```js
   * const annotation = decl.prev()
   * if (annotation.type === 'comment') {
   *   readAnnotation(annotation.text)
   * }
   * ```
   *
   * @return Previous node.
   */
  prev(): ChildNode | undefined

  /**
   * Insert new node before current node to current node’s parent.
   *
   * Just alias for `node.parent.insertBefore(node, add)`.
   *
   * ```js
   * decl.before('content: ""')
   * ```
   *
   * @param newNode New node.
   * @return This node for methods chain.
   */
  before(newNode: Node | ChildProps | string | Node[]): this

  /**
   * Insert new node after current node to current node’s parent.
   *
   * Just alias for `node.parent.insertAfter(node, add)`.
   *
   * ```js
   * decl.after('color: black')
   * ```
   *
   * @param newNode New node.
   * @return This node for methods chain.
   */
  after(newNode: Node | ChildProps | string | Node[]): this

  /**
   * Finds the Root instance of the node’s tree.
   *
   * ```js
   * root.nodes[0].nodes[0].root() === root
   * ```
   *
   * @return Root parent.
   */
  root(): Root

  /**
   * Returns a `Node#raws` value. If the node is missing
   * the code style property (because the node was manually built or cloned),
   * PostCSS will try to autodetect the code style property by looking
   * at other nodes in the tree.
   *
   * ```js
   * const root = postcss.parse('a { background: white }')
   * root.nodes[0].append({ prop: 'color', value: 'black' })
   * root.nodes[0].nodes[1].raws.before   //=> undefined
   * root.nodes[0].nodes[1].raw('before') //=> ' '
   * ```
   *
   * @param prop        Name of code style property.
   * @param defaultType Name of default value, it can be missed
   *                    if the value is the same as prop.
   * @return {string} Code style value.
   */
  raw(prop: string, defaultType?: string): string

  /**
   * Clear the code style properties for the node and its children.
   *
   * ```js
   * node.raws.before  //=> ' '
   * node.cleanRaws()
   * node.raws.before  //=> undefined
   * ```
   *
   * @param keepBetween Keep the `raws.between` symbols.
   */
  cleanRaws(keepBetween?: boolean): void

  /**
   * Fix circular links on `JSON.stringify()`.
   *
   * @return Cleaned object.
   */
  toJSON(): object

  /**
   * Convert string index to line/column.
   *
   * @param index The symbol number in the node’s string.
   * @return Symbol position in file.
   */
  positionInside(index: number): Position

  /**
   * Get the position for a word or an index inside the node.
   *
   * @param opts Options.
   * @return Position.
   */
  positionBy(opts?: Pick<WarningOptions, 'word' | 'index'>): Position

  /**
   * Get the range for a word or start and end index inside the node.
   * The start index is inclusive; the end index is exclusive.
   *
   * @param opts Options.
   * @return Range.
   */
  rangeBy(opts?: Pick<WarningOptions, 'word' | 'index' | 'endIndex'>): Range
}