GenerateLoremIpsum Class — drizzle-orm Architecture

Source Code

drizzle-seed/src/services/Generators.ts lines 2768–2808

export class GenerateLoremIpsum extends AbstractGenerator<{
	sentencesCount?: number;
	arraySize?: number;
}> {
	static override readonly entityKind: string = 'GenerateLoremIpsum';

	private state: {
		rng: prand.RandomGenerator;
	} | undefined;

	override init({ count, seed }: { count: number; seed: number }) {
		super.init({ count, seed });

		const rng = prand.xoroshiro128plus(seed);
		if (this.params.sentencesCount === undefined) this.params.sentencesCount = 1;

		const maxLoremIpsumSentencesLength = maxLoremIpsumLength * this.params.sentencesCount + this.params.sentencesCount
			- 1;
		if (this.stringLength !== undefined && this.stringLength < maxLoremIpsumSentencesLength) {
			throw new Error(
				`You can't use lorem ipsum generator with a db column length restriction of ${this.stringLength}. Set the maximum string length to at least ${maxLoremIpsumSentencesLength}.`,
			);
		}

		this.state = { rng };
	}

	generate() {
		if (this.state === undefined) {
			throw new Error('state is not defined.');
		}

		let idx, resultText: string = '';
		for (let i = 0; i < this.params.sentencesCount!; i++) {
			[idx, this.state.rng] = prand.uniformIntDistribution(0, loremIpsumSentences.length - 1, this.state.rng);
			resultText += loremIpsumSentences[idx] + ' ';
		}

		return resultText;
	}
}