Supplemental cash flow information (Tables)

12 Months Ended

Dec. 31, 2022

Supplemental cash flow information

Schedule of components of the net change in non-cash working capital

Components of the net change in non-cash working capital are as follows:

	Year ended December 31,
	2022		2021		2020
Trade and other receivables	$	72,230	$	1,180,069	$	(316,778)
Inventories		11,750		(176)		18,473
Prepaid expenses and deposits		4,132		(1,630,088)		(53,416)
Trade and other payables and accrued liabilities		669,427		(1,170,715)		(40,937)
Taxes		(104,670)		—		—
Contract liabilities		742,228		(381,596)		(380,629)
Total	$	1,395,097	$	(2,002,506)	$	(773,287)

Schedule of other supplemental information

Other supplemental cash flow information as follows:

	Year ended December 31,
	2022		2021		2020
Cash received for interest	$	1,718	$	22,725	$	1,068
Cash paid for interest		1,154,727		1,311,915		1,105,298