33 lines
949 B
TypeScript
33 lines
949 B
TypeScript
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import { normaliseFormats } from './normalise-formats';
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import { create } from './create';
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import { RichTextValue } from './types';
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/**
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* Concats a pair of rich text values. Not that this mutates `a` and does NOT
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* normalise formats!
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*
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* @param {Object} a Value to mutate.
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* @param {Object} b Value to add read from.
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*
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* @return {Object} `a`, mutated.
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*/
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export function mergePair( a: RichTextValue, b: RichTextValue ): RichTextValue {
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a.formats = a.formats.concat( b.formats );
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a.replacements = a.replacements.concat( b.replacements );
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a.text += b.text;
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return a;
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}
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/**
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* Combine all Rich Text values into one. This is similar to
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* `String.prototype.concat`.
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*
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* @param {...RichTextValue} values Objects to combine.
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*
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* @return {RichTextValue} A new value combining all given records.
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*/
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export function concat( ...values: RichTextValue[] ): RichTextValue {
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return normaliseFormats( values.reduce( mergePair, create() ) );
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}
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