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camc314
59e8895162
## Summary Validate `startingIndentLevel` before printing to prevent unbounded indentation-cache growth. - Reject non-finite, fractional, negative, and unsafe integer values with a `RangeError`. - Document the option as a non-negative integer.
73 lines
1.7 KiB
TypeScript
73 lines
1.7 KiB
TypeScript
// Printing options, and the source map types the `sourceMap` option brings with it.
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/**
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* Source map generator, compatible with `SourceMapGenerator` from the `source-map` package.
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*/
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export interface SourceMapGenerator {
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addMapping(mapping: Mapping): void;
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file?: string;
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_file?: string;
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}
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/**
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* Source map mapping emitted through `Options["sourceMap"]`.
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*
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* Note: the `Mapping` objects passed to `addMapping` are reused across calls;
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* implementations must copy any values they need to retain.
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*/
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export interface Mapping {
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original: Position;
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generated: Position;
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name: string | undefined;
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source: string;
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}
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/**
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* A `Mapping` before the per-mapping fields are filled in.
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*/
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export type MutableMapping = Omit<Mapping, "original" | "source"> & {
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original: Position | null;
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source: string | undefined;
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};
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/**
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* Position in the original source, as found on a node's `loc.start`.
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*/
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export interface Position {
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line: number;
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column: number;
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}
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/**
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* Code generator options.
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*/
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export interface Options {
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/**
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* String to use for indentation, defaults to `"\t"`.
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* Must consist only of spaces and/or tabs - anything else falls back to a tab.
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*/
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indent?: string;
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/**
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* Non-negative integer indent level to start from, from `0` to `1000`. Defaults to `0`.
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*/
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startingIndentLevel?: number;
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/**
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* `.tsx` mode if `true`, in which a lone type parameter prints as `<T,>`.
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* Defaults to `false`.
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*/
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jsx?: boolean;
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/**
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* `true` if the AST may contain TypeScript syntax (TS-ESLint dialect).
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* Defaults to `false`.
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*/
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ts?: boolean;
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/**
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* If present, source mappings are emitted through it.
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*/
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sourceMap?: SourceMapGenerator;
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}
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